./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/half_2.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/half_2.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 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 21:29:24,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:29:24,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:29:24,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:29:24,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:29:24,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:29:24,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:29:24,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:29:24,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:29:24,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:29:24,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:29:24,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:29:24,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:29:24,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:29:24,240 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:29:24,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:29:24,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:29:24,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:29:24,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:29:24,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:29:24,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:29:24,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:29:24,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:29:24,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:29:24,246 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:29:24,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:29:24,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:29:24,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:29:24,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:29:24,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:29:24,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:29:24,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:29:24,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:29:24,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:29:24,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:29:24,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:29:24,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:29:24,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:29:24,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:29:24,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:29:24,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:29:24,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:29:24,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:29:24,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:29:24,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:29:24,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:29:24,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:29:24,516 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:29:24,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/half_2.i [2024-09-12 21:29:25,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:29:26,057 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:29:26,058 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/half_2.i [2024-09-12 21:29:26,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e7b530a63/746a2a3ea3834dc788022fab3754fad9/FLAG481f0c3a6 [2024-09-12 21:29:26,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e7b530a63/746a2a3ea3834dc788022fab3754fad9 [2024-09-12 21:29:26,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:29:26,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:29:26,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:29:26,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:29:26,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:29:26,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132aca75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:29:26,265 WARN L247 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/half_2.i[893,906] [2024-09-12 21:29:26,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:29:26,289 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:29:26,302 WARN L247 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/half_2.i[893,906] [2024-09-12 21:29:26,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:29:26,317 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:29:26,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26 WrapperNode [2024-09-12 21:29:26,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:29:26,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:29:26,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:29:26,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:29:26,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,334 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:29:26,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:29:26,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:29:26,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:29:26,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:29:26,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,355 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]. [2024-09-12 21:29:26,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:29:26,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:29:26,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:29:26,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:29:26,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:29:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:26,401 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) [2024-09-12 21:29:26,403 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 [2024-09-12 21:29:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:29:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:29:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:29:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:29:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:29:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:29:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:29:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:29:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:29:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:29:26,497 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:29:26,499 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:29:26,634 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-12 21:29:26,635 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:29:26,651 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:29:26,651 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 21:29:26,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:29:26 BoogieIcfgContainer [2024-09-12 21:29:26,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:29:26,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:29:26,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:29:26,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:29:26,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:29:26" (1/3) ... [2024-09-12 21:29:26,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727cb965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (2/3) ... [2024-09-12 21:29:26,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727cb965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:29:26" (3/3) ... [2024-09-12 21:29:26,674 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2.i [2024-09-12 21:29:26,690 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:29:26,690 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:29:26,738 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:29:26,745 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;@4de9d809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:29:26,745 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:29:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2024-09-12 21:29:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 21:29:26,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:26,757 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:26,758 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:26,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1892212544, now seen corresponding path program 1 times [2024-09-12 21:29:26,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:26,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449648904] [2024-09-12 21:29:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:26,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:27,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449648904] [2024-09-12 21:29:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449648904] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:29:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:29:27,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 21:29:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832100547] [2024-09-12 21:29:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:29:27,153 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 21:29:27,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 21:29:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:29:27,176 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:27,294 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2024-09-12 21:29:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 21:29:27,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 21:29:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:27,304 INFO L225 Difference]: With dead ends: 46 [2024-09-12 21:29:27,304 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 21:29:27,308 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-12 21:29:27,311 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:27,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 21:29:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-09-12 21:29:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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) [2024-09-12 21:29:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-09-12 21:29:27,344 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2024-09-12 21:29:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:27,345 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-09-12 21:29:27,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:27,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-09-12 21:29:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 21:29:27,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:27,347 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:27,347 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:29:27,347 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:27,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash 706153222, now seen corresponding path program 1 times [2024-09-12 21:29:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771939433] [2024-09-12 21:29:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:27,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:27,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771939433] [2024-09-12 21:29:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771939433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615941378] [2024-09-12 21:29:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:27,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:27,605 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) [2024-09-12 21:29:27,606 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 21:29:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 21:29:27,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:27,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615941378] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:28,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-09-12 21:29:28,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255605417] [2024-09-12 21:29:28,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:28,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 21:29:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 21:29:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-12 21:29:28,085 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:28,339 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-09-12 21:29:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 21:29:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 21:29:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:28,342 INFO L225 Difference]: With dead ends: 43 [2024-09-12 21:29:28,342 INFO L226 Difference]: Without dead ends: 41 [2024-09-12 21:29:28,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:29:28,345 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:28,345 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-12 21:29:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-09-12 21:29:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:29:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-12 21:29:28,362 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 14 [2024-09-12 21:29:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:28,363 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-12 21:29:28,363 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:28,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-12 21:29:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 21:29:28,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:28,365 INFO L216 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 21:29:28,569 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:28,570 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:28,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash 956344902, now seen corresponding path program 2 times [2024-09-12 21:29:28,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:28,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659157516] [2024-09-12 21:29:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659157516] [2024-09-12 21:29:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659157516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608492729] [2024-09-12 21:29:28,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:28,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:28,708 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) [2024-09-12 21:29:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 21:29:28,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:28,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:28,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 21:29:28,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608492729] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:28,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-09-12 21:29:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137455387] [2024-09-12 21:29:28,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:28,928 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 21:29:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 21:29:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:29:28,930 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:29,057 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-09-12 21:29:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 21:29:29,057 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 21:29:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:29,059 INFO L225 Difference]: With dead ends: 56 [2024-09-12 21:29:29,059 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 21:29:29,060 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:29:29,061 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:29,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 173 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 21:29:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2024-09-12 21:29:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:29:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-09-12 21:29:29,071 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2024-09-12 21:29:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:29,071 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-09-12 21:29:29,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:29:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-09-12 21:29:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 21:29:29,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:29,073 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:29,085 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 21:29:29,273 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,274 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:29,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1089087464, now seen corresponding path program 1 times [2024-09-12 21:29:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225351439] [2024-09-12 21:29:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-12 21:29:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:29,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:29,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225351439] [2024-09-12 21:29:29,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225351439] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117473909] [2024-09-12 21:29:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:29,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:29,400 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) [2024-09-12 21:29:29,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 21:29:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 21:29:29,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:29,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 21:29:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117473909] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:29:29,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 21:29:29,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-12 21:29:29,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837730622] [2024-09-12 21:29:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:29:29,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 21:29:29,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 21:29:29,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:29:29,492 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:29:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:29,527 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-09-12 21:29:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 21:29:29,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-12 21:29:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:29,529 INFO L225 Difference]: With dead ends: 48 [2024-09-12 21:29:29,529 INFO L226 Difference]: Without dead ends: 36 [2024-09-12 21:29:29,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:29:29,530 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:29,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:29:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-12 21:29:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-12 21:29:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:29:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-09-12 21:29:29,543 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2024-09-12 21:29:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:29,544 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-09-12 21:29:29,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:29:29,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-09-12 21:29:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 21:29:29,545 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:29,545 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:29,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 21:29:29,745 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,746 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:29,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash -177252568, now seen corresponding path program 1 times [2024-09-12 21:29:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442892582] [2024-09-12 21:29:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 21:29:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442892582] [2024-09-12 21:29:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442892582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662466574] [2024-09-12 21:29:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:29,991 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) [2024-09-12 21:29:29,997 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 21:29:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 21:29:30,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:30,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:30,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662466574] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:30,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:30,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2024-09-12 21:29:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20600517] [2024-09-12 21:29:30,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:30,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 21:29:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 21:29:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:29:30,431 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:29:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:30,754 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-09-12 21:29:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:29:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-09-12 21:29:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:30,756 INFO L225 Difference]: With dead ends: 66 [2024-09-12 21:29:30,757 INFO L226 Difference]: Without dead ends: 46 [2024-09-12 21:29:30,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:29:30,759 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:30,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-12 21:29:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2024-09-12 21:29:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:29:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-09-12 21:29:30,773 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 22 [2024-09-12 21:29:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:30,773 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-09-12 21:29:30,773 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:29:30,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-09-12 21:29:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 21:29:30,775 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:30,775 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:30,791 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 21:29:30,979 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:30,980 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:30,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:30,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1835559814, now seen corresponding path program 2 times [2024-09-12 21:29:30,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:30,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483284089] [2024-09-12 21:29:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:30,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 21:29:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:29:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483284089] [2024-09-12 21:29:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483284089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558388250] [2024-09-12 21:29:31,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:31,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:31,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:31,139 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) [2024-09-12 21:29:31,141 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 21:29:31,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:31,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:31,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 21:29:31,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 21:29:31,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 21:29:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558388250] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:31,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-09-12 21:29:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669232351] [2024-09-12 21:29:31,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:31,364 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 21:29:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 21:29:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-09-12 21:29:31,366 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:29:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:31,484 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2024-09-12 21:29:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:29:31,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2024-09-12 21:29:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:31,485 INFO L225 Difference]: With dead ends: 60 [2024-09-12 21:29:31,486 INFO L226 Difference]: Without dead ends: 41 [2024-09-12 21:29:31,486 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:29:31,487 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:31,488 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-12 21:29:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-12 21:29:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:29:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-12 21:29:31,499 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2024-09-12 21:29:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:31,501 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-12 21:29:31,501 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:29:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-12 21:29:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 21:29:31,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:31,502 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:31,520 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:31,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 21:29:31,703 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:31,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1852463814, now seen corresponding path program 3 times [2024-09-12 21:29:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361037719] [2024-09-12 21:29:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 21:29:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:29:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361037719] [2024-09-12 21:29:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361037719] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734142357] [2024-09-12 21:29:32,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:32,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:32,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:32,047 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) [2024-09-12 21:29:32,048 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 21:29:32,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 21:29:32,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:32,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 21:29:32,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:32,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:32,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734142357] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:32,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 29 [2024-09-12 21:29:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166393868] [2024-09-12 21:29:32,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:32,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 21:29:32,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 21:29:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:29:32,715 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 27 states have internal predecessors, (43), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:29:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:33,014 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-09-12 21:29:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:29:33,015 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 27 states have internal predecessors, (43), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 30 [2024-09-12 21:29:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:33,016 INFO L225 Difference]: With dead ends: 68 [2024-09-12 21:29:33,017 INFO L226 Difference]: Without dead ends: 45 [2024-09-12 21:29:33,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:29:33,019 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:33,020 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 174 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-12 21:29:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-12 21:29:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:29:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-09-12 21:29:33,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2024-09-12 21:29:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:33,034 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-09-12 21:29:33,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 27 states have internal predecessors, (43), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:29:33,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-09-12 21:29:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 21:29:33,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:33,035 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:33,052 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 21:29:33,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:33,236 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:33,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1152152512, now seen corresponding path program 4 times [2024-09-12 21:29:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366861367] [2024-09-12 21:29:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:29:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:29:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366861367] [2024-09-12 21:29:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366861367] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23808705] [2024-09-12 21:29:33,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:29:33,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:33,385 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) [2024-09-12 21:29:33,386 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 21:29:33,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:29:33,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:33,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 21:29:33,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 21:29:33,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 21:29:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23808705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:33,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2024-09-12 21:29:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70896519] [2024-09-12 21:29:33,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:33,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 21:29:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 21:29:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:29:33,719 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 21:29:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:33,834 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-09-12 21:29:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 21:29:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2024-09-12 21:29:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:33,835 INFO L225 Difference]: With dead ends: 54 [2024-09-12 21:29:33,835 INFO L226 Difference]: Without dead ends: 52 [2024-09-12 21:29:33,836 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:29:33,837 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:33,837 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-12 21:29:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-09-12 21:29:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 39 states have internal predecessors, (40), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:29:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-09-12 21:29:33,860 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 31 [2024-09-12 21:29:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:33,861 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-09-12 21:29:33,861 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 21:29:33,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-09-12 21:29:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 21:29:33,863 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:33,863 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:33,877 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:34,063 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:34,063 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:34,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -164723864, now seen corresponding path program 5 times [2024-09-12 21:29:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482000227] [2024-09-12 21:29:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:29:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:29:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:29:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482000227] [2024-09-12 21:29:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482000227] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301666224] [2024-09-12 21:29:34,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:29:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:34,420 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) [2024-09-12 21:29:34,422 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 21:29:34,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 21:29:34,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:34,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 21:29:34,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:34,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301666224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:35,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 31 [2024-09-12 21:29:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412902235] [2024-09-12 21:29:35,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:35,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 21:29:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 21:29:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:29:35,171 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 31 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:35,707 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2024-09-12 21:29:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 21:29:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 38 [2024-09-12 21:29:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:35,709 INFO L225 Difference]: With dead ends: 97 [2024-09-12 21:29:35,709 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 21:29:35,710 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:29:35,710 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:35,711 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 174 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 21:29:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-12 21:29:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-09-12 21:29:35,730 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 38 [2024-09-12 21:29:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:35,731 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-09-12 21:29:35,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-09-12 21:29:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 21:29:35,732 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:35,732 INFO L216 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:35,750 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 21:29:35,932 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:35,933 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:35,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1495655394, now seen corresponding path program 6 times [2024-09-12 21:29:35,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:35,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963524437] [2024-09-12 21:29:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:36,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:36,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:29:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:36,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:29:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:36,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:29:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 34 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963524437] [2024-09-12 21:29:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963524437] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398795532] [2024-09-12 21:29:36,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:29:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:36,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:36,203 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) [2024-09-12 21:29:36,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 21:29:36,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-09-12 21:29:36,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:36,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 21:29:36,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:36,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398795532] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:36,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2024-09-12 21:29:36,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818532698] [2024-09-12 21:29:36,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:36,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:29:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:29:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:29:36,717 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 39 states have internal predecessors, (58), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:29:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:36,998 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2024-09-12 21:29:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 21:29:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 39 states have internal predecessors, (58), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 43 [2024-09-12 21:29:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:36,999 INFO L225 Difference]: With dead ends: 120 [2024-09-12 21:29:36,999 INFO L226 Difference]: Without dead ends: 118 [2024-09-12 21:29:37,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=1947, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:29:37,001 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:37,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 243 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-12 21:29:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-09-12 21:29:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 87 states have internal predecessors, (88), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (26), 21 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:29:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2024-09-12 21:29:37,023 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 43 [2024-09-12 21:29:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:37,023 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2024-09-12 21:29:37,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 39 states have internal predecessors, (58), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:29:37,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2024-09-12 21:29:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 21:29:37,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:37,025 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:37,040 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 21:29:37,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 21:29:37,225 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:37,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash -560948602, now seen corresponding path program 7 times [2024-09-12 21:29:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328692310] [2024-09-12 21:29:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:29:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:29:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:29:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:37,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328692310] [2024-09-12 21:29:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328692310] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999546022] [2024-09-12 21:29:37,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:29:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:37,675 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) [2024-09-12 21:29:37,676 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 21:29:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 21:29:37,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:37,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999546022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:38,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:38,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 36 [2024-09-12 21:29:38,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321920841] [2024-09-12 21:29:38,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:38,519 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 21:29:38,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 21:29:38,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1072, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:29:38,520 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:29:39,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:39,116 INFO L93 Difference]: Finished difference Result 176 states and 207 transitions. [2024-09-12 21:29:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 21:29:39,119 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 46 [2024-09-12 21:29:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:39,120 INFO L225 Difference]: With dead ends: 176 [2024-09-12 21:29:39,121 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 21:29:39,122 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=2087, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:29:39,124 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:39,124 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 210 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 21:29:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-12 21:29:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 100 states have internal predecessors, (102), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:29:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2024-09-12 21:29:39,156 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 46 [2024-09-12 21:29:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:39,156 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2024-09-12 21:29:39,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:29:39,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2024-09-12 21:29:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 21:29:39,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:39,159 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:39,174 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:39,362 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 21:29:39,362 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1996799912, now seen corresponding path program 8 times [2024-09-12 21:29:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844993692] [2024-09-12 21:29:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:29:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:29:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:29:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:29:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:29:39,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:39,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844993692] [2024-09-12 21:29:39,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844993692] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:39,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880552459] [2024-09-12 21:29:39,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:39,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:39,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:39,875 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) [2024-09-12 21:29:39,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 21:29:39,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:39,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:39,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:29:39,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:29:40,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:29:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880552459] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:40,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:40,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 47 [2024-09-12 21:29:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088068138] [2024-09-12 21:29:40,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:40,997 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:29:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:29:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1863, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:29:40,998 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand has 47 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 45 states have internal predecessors, (70), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:41,781 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2024-09-12 21:29:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-12 21:29:41,782 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 45 states have internal predecessors, (70), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 54 [2024-09-12 21:29:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:41,783 INFO L225 Difference]: With dead ends: 197 [2024-09-12 21:29:41,783 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 21:29:41,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=589, Invalid=3571, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:29:41,785 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:41,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 202 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:29:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 21:29:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2024-09-12 21:29:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 111 states have internal predecessors, (114), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 21:29:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 181 transitions. [2024-09-12 21:29:41,813 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 181 transitions. Word has length 54 [2024-09-12 21:29:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:41,813 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 181 transitions. [2024-09-12 21:29:41,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 45 states have internal predecessors, (70), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:41,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 181 transitions. [2024-09-12 21:29:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 21:29:41,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:41,814 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:41,829 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 21:29:42,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:42,018 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:42,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1940245062, now seen corresponding path program 9 times [2024-09-12 21:29:42,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:42,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150826694] [2024-09-12 21:29:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:42,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:29:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:29:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:29:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:29:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:29:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 47 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150826694] [2024-09-12 21:29:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150826694] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081941004] [2024-09-12 21:29:42,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:42,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:42,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:42,618 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) [2024-09-12 21:29:42,620 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 21:29:42,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-12 21:29:42,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:42,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:29:42,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:43,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081941004] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:43,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 46 [2024-09-12 21:29:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890161100] [2024-09-12 21:29:43,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:43,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 21:29:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 21:29:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1771, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:29:43,754 INFO L87 Difference]: Start difference. First operand 150 states and 181 transitions. Second operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:29:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:44,756 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2024-09-12 21:29:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 21:29:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 62 [2024-09-12 21:29:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:44,758 INFO L225 Difference]: With dead ends: 215 [2024-09-12 21:29:44,758 INFO L226 Difference]: Without dead ends: 164 [2024-09-12 21:29:44,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=595, Invalid=3437, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:29:44,759 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:44,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 298 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:29:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-12 21:29:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-09-12 21:29:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 115 states have (on average 1.0782608695652174) internal successors, (124), 120 states have internal predecessors, (124), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (35), 30 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 21:29:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 195 transitions. [2024-09-12 21:29:44,795 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 195 transitions. Word has length 62 [2024-09-12 21:29:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:44,795 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 195 transitions. [2024-09-12 21:29:44,796 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:29:44,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 195 transitions. [2024-09-12 21:29:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 21:29:44,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:44,797 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:44,809 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:44,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 21:29:44,998 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:44,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 391515112, now seen corresponding path program 10 times [2024-09-12 21:29:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654881389] [2024-09-12 21:29:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:44,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:29:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:29:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:29:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:29:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:29:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:29:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 62 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:29:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654881389] [2024-09-12 21:29:45,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654881389] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044160183] [2024-09-12 21:29:45,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:29:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:45,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:45,642 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) [2024-09-12 21:29:45,644 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 21:29:45,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:29:45,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:45,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:29:45,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:29:46,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:29:46,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044160183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:46,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:46,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 51 [2024-09-12 21:29:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179553015] [2024-09-12 21:29:46,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:46,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:29:46,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:29:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=2185, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:29:46,833 INFO L87 Difference]: Start difference. First operand 162 states and 195 transitions. Second operand has 51 states, 50 states have (on average 1.6) internal successors, (80), 49 states have internal predecessors, (80), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:29:48,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:48,055 INFO L93 Difference]: Finished difference Result 230 states and 269 transitions. [2024-09-12 21:29:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 21:29:48,055 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.6) internal successors, (80), 49 states have internal predecessors, (80), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 70 [2024-09-12 21:29:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:48,057 INFO L225 Difference]: With dead ends: 230 [2024-09-12 21:29:48,057 INFO L226 Difference]: Without dead ends: 172 [2024-09-12 21:29:48,059 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=735, Invalid=4235, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:29:48,059 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:48,060 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 336 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:29:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-12 21:29:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2024-09-12 21:29:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 127 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 10 states have return successors, (37), 31 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:29:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2024-09-12 21:29:48,090 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 70 [2024-09-12 21:29:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:48,090 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2024-09-12 21:29:48,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.6) internal successors, (80), 49 states have internal predecessors, (80), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:29:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2024-09-12 21:29:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 21:29:48,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:48,091 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:48,104 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 21:29:48,292 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 21:29:48,292 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:48,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 96856582, now seen corresponding path program 11 times [2024-09-12 21:29:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992322574] [2024-09-12 21:29:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:29:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:29:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:29:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:29:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:29:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:29:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:29:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:49,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 86 proven. 75 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992322574] [2024-09-12 21:29:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992322574] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790183779] [2024-09-12 21:29:49,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:29:49,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:49,011 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) [2024-09-12 21:29:49,013 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 21:29:49,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-09-12 21:29:49,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:49,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 21:29:49,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:49,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:50,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790183779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:50,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:50,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 56 [2024-09-12 21:29:50,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702244048] [2024-09-12 21:29:50,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:50,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:29:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:29:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=2642, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:29:50,403 INFO L87 Difference]: Start difference. First operand 170 states and 206 transitions. Second operand has 56 states, 55 states have (on average 1.6) internal successors, (88), 54 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:29:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:51,922 INFO L93 Difference]: Finished difference Result 262 states and 310 transitions. [2024-09-12 21:29:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 21:29:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.6) internal successors, (88), 54 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 78 [2024-09-12 21:29:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:51,925 INFO L225 Difference]: With dead ends: 262 [2024-09-12 21:29:51,925 INFO L226 Difference]: Without dead ends: 201 [2024-09-12 21:29:51,926 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=891, Invalid=5115, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:29:51,927 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:51,927 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 461 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:29:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-12 21:29:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2024-09-12 21:29:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 148 states have internal predecessors, (153), 46 states have call successors, (46), 12 states have call predecessors, (46), 11 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 21:29:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 244 transitions. [2024-09-12 21:29:51,961 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 244 transitions. Word has length 78 [2024-09-12 21:29:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:51,961 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 244 transitions. [2024-09-12 21:29:51,961 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.6) internal successors, (88), 54 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:29:51,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 244 transitions. [2024-09-12 21:29:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 21:29:51,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:51,963 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:51,979 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 21:29:52,167 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 21:29:52,168 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:52,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1215928280, now seen corresponding path program 12 times [2024-09-12 21:29:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140369] [2024-09-12 21:29:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:29:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:29:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:29:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:29:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:29:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:29:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:29:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 110 proven. 89 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140369] [2024-09-12 21:29:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140369] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339388030] [2024-09-12 21:29:53,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:29:53,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:53,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:53,006 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) [2024-09-12 21:29:53,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 21:29:53,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 21:29:53,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:53,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 21:29:53,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 29 proven. 194 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 21:29:53,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 29 proven. 194 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 21:29:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339388030] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:55,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 28] total 75 [2024-09-12 21:29:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249852995] [2024-09-12 21:29:55,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:55,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:29:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:29:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=5023, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:29:55,245 INFO L87 Difference]: Start difference. First operand 200 states and 244 transitions. Second operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 72 states have internal predecessors, (111), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:29:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:57,695 INFO L93 Difference]: Finished difference Result 256 states and 299 transitions. [2024-09-12 21:29:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:29:57,696 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.5) internal successors, (111), 72 states have internal predecessors, (111), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 86 [2024-09-12 21:29:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:57,697 INFO L225 Difference]: With dead ends: 256 [2024-09-12 21:29:57,697 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 21:29:57,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1096, Invalid=10034, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 21:29:57,701 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:57,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 534 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:29:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 21:29:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-12 21:29:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.0763358778625953) internal successors, (141), 137 states have internal predecessors, (141), 42 states have call successors, (42), 11 states have call predecessors, (42), 10 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 21:29:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 224 transitions. [2024-09-12 21:29:57,733 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 224 transitions. Word has length 86 [2024-09-12 21:29:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:57,733 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 224 transitions. [2024-09-12 21:29:57,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.5) internal successors, (111), 72 states have internal predecessors, (111), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:29:57,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 224 transitions. [2024-09-12 21:29:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 21:29:57,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:57,735 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:57,750 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 21:29:57,939 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 21:29:57,940 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:57,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1932610338, now seen corresponding path program 13 times [2024-09-12 21:29:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686554967] [2024-09-12 21:29:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:29:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:29:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:29:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:29:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:29:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:29:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:29:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:29:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 63 proven. 147 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686554967] [2024-09-12 21:29:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686554967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642259235] [2024-09-12 21:29:58,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:29:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:58,406 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) [2024-09-12 21:29:58,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 21:29:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:58,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:29:58,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:58,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642259235] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:59,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:59,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-09-12 21:29:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305260744] [2024-09-12 21:29:59,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:59,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:29:59,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:29:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1977, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:29:59,142 INFO L87 Difference]: Start difference. First operand 184 states and 224 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:59,517 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2024-09-12 21:29:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 21:29:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 87 [2024-09-12 21:29:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:59,521 INFO L225 Difference]: With dead ends: 197 [2024-09-12 21:29:59,521 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 21:29:59,522 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 159 SyntacticMatches, 12 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=603, Invalid=2937, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:29:59,522 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:59,522 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 205 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 21:29:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-09-12 21:29:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 138 states have (on average 1.0724637681159421) internal successors, (148), 144 states have internal predecessors, (148), 44 states have call successors, (44), 12 states have call predecessors, (44), 11 states have return successors, (43), 37 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:29:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 235 transitions. [2024-09-12 21:29:59,564 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 235 transitions. Word has length 87 [2024-09-12 21:29:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:59,564 INFO L474 AbstractCegarLoop]: Abstraction has 194 states and 235 transitions. [2024-09-12 21:29:59,565 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 47 states have internal predecessors, (67), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:59,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 235 transitions. [2024-09-12 21:29:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-12 21:29:59,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:59,568 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:59,584 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:59,768 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:59,769 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:59,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash 202176966, now seen corresponding path program 14 times [2024-09-12 21:29:59,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:59,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738982884] [2024-09-12 21:29:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:30:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:30:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:30:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:30:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:30:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:30:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:30:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:30:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:30:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:30:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 137 proven. 104 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:30:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738982884] [2024-09-12 21:30:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738982884] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876736497] [2024-09-12 21:30:00,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:30:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:00,704 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) [2024-09-12 21:30:00,705 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 21:30:00,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:30:00,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:00,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-12 21:30:00,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:30:01,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:30:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876736497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:02,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:02,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 77 [2024-09-12 21:30:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501817678] [2024-09-12 21:30:02,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:02,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 21:30:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 21:30:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=5083, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:30:02,842 INFO L87 Difference]: Start difference. First operand 194 states and 235 transitions. Second operand has 77 states, 76 states have (on average 1.513157894736842) internal successors, (115), 75 states have internal predecessors, (115), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 21:30:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:05,062 INFO L93 Difference]: Finished difference Result 304 states and 362 transitions. [2024-09-12 21:30:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 21:30:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.513157894736842) internal successors, (115), 75 states have internal predecessors, (115), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 94 [2024-09-12 21:30:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:05,065 INFO L225 Difference]: With dead ends: 304 [2024-09-12 21:30:05,065 INFO L226 Difference]: Without dead ends: 233 [2024-09-12 21:30:05,066 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3365 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1564, Invalid=9356, Unknown=0, NotChecked=0, Total=10920 [2024-09-12 21:30:05,066 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:05,066 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 526 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:30:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-09-12 21:30:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2024-09-12 21:30:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 165 states have (on average 1.0787878787878789) internal successors, (178), 171 states have internal predecessors, (178), 54 states have call successors, (54), 13 states have call predecessors, (54), 12 states have return successors, (53), 47 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 21:30:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 285 transitions. [2024-09-12 21:30:05,107 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 285 transitions. Word has length 94 [2024-09-12 21:30:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:05,107 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 285 transitions. [2024-09-12 21:30:05,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.513157894736842) internal successors, (115), 75 states have internal predecessors, (115), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 21:30:05,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 285 transitions. [2024-09-12 21:30:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-12 21:30:05,109 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:05,109 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:05,122 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:05,310 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 21:30:05,310 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:05,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:05,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1191586712, now seen corresponding path program 15 times [2024-09-12 21:30:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775770873] [2024-09-12 21:30:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:05,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:30:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:30:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:30:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:30:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:30:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:30:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:30:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:30:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:30:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:30:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:30:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 167 proven. 120 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775770873] [2024-09-12 21:30:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775770873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089866343] [2024-09-12 21:30:06,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:30:06,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:06,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:06,359 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) [2024-09-12 21:30:06,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 21:30:06,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-12 21:30:06,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:06,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:30:06,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 22 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:07,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 22 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089866343] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:08,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 83 [2024-09-12 21:30:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161247636] [2024-09-12 21:30:08,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:08,862 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:30:08,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:30:08,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=6014, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:30:08,863 INFO L87 Difference]: Start difference. First operand 232 states and 285 transitions. Second operand has 83 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 81 states have internal predecessors, (124), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:30:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:11,001 INFO L93 Difference]: Finished difference Result 296 states and 348 transitions. [2024-09-12 21:30:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:30:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 81 states have internal predecessors, (124), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 102 [2024-09-12 21:30:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:11,004 INFO L225 Difference]: With dead ends: 296 [2024-09-12 21:30:11,004 INFO L226 Difference]: Without dead ends: 214 [2024-09-12 21:30:11,005 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1545, Invalid=12027, Unknown=0, NotChecked=0, Total=13572 [2024-09-12 21:30:11,006 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:11,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 436 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:30:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-09-12 21:30:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2024-09-12 21:30:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 152 states have (on average 1.0789473684210527) internal successors, (164), 158 states have internal predecessors, (164), 49 states have call successors, (49), 12 states have call predecessors, (49), 11 states have return successors, (48), 42 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 21:30:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 261 transitions. [2024-09-12 21:30:11,043 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 261 transitions. Word has length 102 [2024-09-12 21:30:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:11,043 INFO L474 AbstractCegarLoop]: Abstraction has 213 states and 261 transitions. [2024-09-12 21:30:11,043 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 81 states have internal predecessors, (124), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:30:11,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 261 transitions. [2024-09-12 21:30:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 21:30:11,044 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:11,044 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:11,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 21:30:11,244 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:11,245 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:11,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1669102750, now seen corresponding path program 16 times [2024-09-12 21:30:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411246911] [2024-09-12 21:30:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:30:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:30:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:30:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:30:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:30:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:30:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:30:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:30:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:30:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 88 proven. 212 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:11,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411246911] [2024-09-12 21:30:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411246911] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892343662] [2024-09-12 21:30:11,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:30:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:11,811 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) [2024-09-12 21:30:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 21:30:11,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:30:11,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:11,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 21:30:11,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 22 proven. 278 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:12,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 22 proven. 278 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:30:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892343662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:12,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:12,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-09-12 21:30:12,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705775325] [2024-09-12 21:30:12,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:12,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 21:30:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 21:30:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=2686, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:30:12,711 INFO L87 Difference]: Start difference. First operand 213 states and 261 transitions. Second operand has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 55 states have internal predecessors, (77), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:30:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:13,083 INFO L93 Difference]: Finished difference Result 226 states and 275 transitions. [2024-09-12 21:30:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 21:30:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 55 states have internal predecessors, (77), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 103 [2024-09-12 21:30:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:13,086 INFO L225 Difference]: With dead ends: 226 [2024-09-12 21:30:13,086 INFO L226 Difference]: Without dead ends: 224 [2024-09-12 21:30:13,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 191 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=815, Invalid=4015, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:30:13,088 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:13,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 212 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:30:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-12 21:30:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2024-09-12 21:30:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 165 states have internal predecessors, (171), 51 states have call successors, (51), 13 states have call predecessors, (51), 12 states have return successors, (50), 44 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:30:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 272 transitions. [2024-09-12 21:30:13,139 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 272 transitions. Word has length 103 [2024-09-12 21:30:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:13,140 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 272 transitions. [2024-09-12 21:30:13,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 55 states have internal predecessors, (77), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:30:13,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 272 transitions. [2024-09-12 21:30:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-12 21:30:13,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:13,142 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:13,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 21:30:13,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:13,346 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:13,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1553398150, now seen corresponding path program 17 times [2024-09-12 21:30:13,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:13,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449309734] [2024-09-12 21:30:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:30:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:30:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:30:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:30:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:30:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:30:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:30:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:30:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:30:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 200 proven. 137 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:30:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449309734] [2024-09-12 21:30:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449309734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222726168] [2024-09-12 21:30:14,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:30:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:14,483 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) [2024-09-12 21:30:14,484 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 21:30:14,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 21:30:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:14,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 21:30:14,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 53 proven. 317 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-12 21:30:15,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 53 proven. 317 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-12 21:30:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222726168] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:17,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 34] total 92 [2024-09-12 21:30:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657074855] [2024-09-12 21:30:17,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:17,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-12 21:30:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-12 21:30:17,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=7323, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 21:30:17,574 INFO L87 Difference]: Start difference. First operand 223 states and 272 transitions. Second operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 90 states have internal predecessors, (138), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:30:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:21,693 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2024-09-12 21:30:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-12 21:30:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 90 states have internal predecessors, (138), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 110 [2024-09-12 21:30:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:21,696 INFO L225 Difference]: With dead ends: 348 [2024-09-12 21:30:21,696 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 21:30:21,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5523 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2480, Invalid=15610, Unknown=0, NotChecked=0, Total=18090 [2024-09-12 21:30:21,697 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:21,697 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 619 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 21:30:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 21:30:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-09-12 21:30:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 190 states have (on average 1.0789473684210527) internal successors, (205), 196 states have internal predecessors, (205), 63 states have call successors, (63), 14 states have call predecessors, (63), 13 states have return successors, (62), 56 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:30:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2024-09-12 21:30:21,755 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 110 [2024-09-12 21:30:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:21,756 INFO L474 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2024-09-12 21:30:21,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 90 states have internal predecessors, (138), 38 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:30:21,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2024-09-12 21:30:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-12 21:30:21,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:21,758 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:21,771 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:21,958 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 21:30:21,958 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:21,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1041518760, now seen corresponding path program 18 times [2024-09-12 21:30:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634723430] [2024-09-12 21:30:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:30:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:30:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:30:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:30:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:30:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:30:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:30:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:30:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:30:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:30:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:30:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:30:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 236 proven. 155 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:30:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634723430] [2024-09-12 21:30:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634723430] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177245369] [2024-09-12 21:30:23,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:30:23,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:23,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:23,087 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) [2024-09-12 21:30:23,089 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 21:30:23,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-12 21:30:23,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:23,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-12 21:30:23,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 26 proven. 365 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:30:24,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 26 proven. 365 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:30:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177245369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:26,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 95 [2024-09-12 21:30:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400884962] [2024-09-12 21:30:26,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:26,153 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-12 21:30:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-12 21:30:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=7771, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 21:30:26,155 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand has 95 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 93 states have internal predecessors, (142), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:30:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:29,623 INFO L93 Difference]: Finished difference Result 383 states and 461 transitions. [2024-09-12 21:30:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-12 21:30:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 93 states have internal predecessors, (142), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 118 [2024-09-12 21:30:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:29,628 INFO L225 Difference]: With dead ends: 383 [2024-09-12 21:30:29,628 INFO L226 Difference]: Without dead ends: 295 [2024-09-12 21:30:29,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5110 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2389, Invalid=14123, Unknown=0, NotChecked=0, Total=16512 [2024-09-12 21:30:29,630 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:29,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 753 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 21:30:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-09-12 21:30:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2024-09-12 21:30:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 208 states have (on average 1.0769230769230769) internal successors, (224), 215 states have internal predecessors, (224), 71 states have call successors, (71), 14 states have call predecessors, (71), 13 states have return successors, (70), 63 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 21:30:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 365 transitions. [2024-09-12 21:30:29,699 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 365 transitions. Word has length 118 [2024-09-12 21:30:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:29,700 INFO L474 AbstractCegarLoop]: Abstraction has 293 states and 365 transitions. [2024-09-12 21:30:29,700 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 93 states have internal predecessors, (142), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:30:29,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 365 transitions. [2024-09-12 21:30:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-09-12 21:30:29,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:29,702 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:29,715 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:29,902 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:29,902 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:29,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash -327161530, now seen corresponding path program 19 times [2024-09-12 21:30:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:29,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587932285] [2024-09-12 21:30:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:29,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:30:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:30:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:30:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:30:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:30:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:30:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:30:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:30:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:30:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:30:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:30:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:30:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:30:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 275 proven. 174 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:30:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587932285] [2024-09-12 21:30:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587932285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679239998] [2024-09-12 21:30:31,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:30:31,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:31,137 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) [2024-09-12 21:30:31,139 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 21:30:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:31,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-12 21:30:31,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 28 proven. 421 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:30:32,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 28 proven. 421 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:30:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679239998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:33,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:33,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 86 [2024-09-12 21:30:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55536975] [2024-09-12 21:30:33,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:33,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 21:30:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 21:30:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=6287, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:30:33,941 INFO L87 Difference]: Start difference. First operand 293 states and 365 transitions. Second operand has 86 states, 85 states have (on average 1.6) internal successors, (136), 84 states have internal predecessors, (136), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:30:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:37,902 INFO L93 Difference]: Finished difference Result 433 states and 526 transitions. [2024-09-12 21:30:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-12 21:30:37,903 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.6) internal successors, (136), 84 states have internal predecessors, (136), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 126 [2024-09-12 21:30:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:37,905 INFO L225 Difference]: With dead ends: 433 [2024-09-12 21:30:37,905 INFO L226 Difference]: Without dead ends: 342 [2024-09-12 21:30:37,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3762 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2163, Invalid=12117, Unknown=0, NotChecked=0, Total=14280 [2024-09-12 21:30:37,907 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:37,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 886 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 21:30:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-09-12 21:30:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2024-09-12 21:30:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 241 states have (on average 1.070539419087137) internal successors, (258), 248 states have internal predecessors, (258), 85 states have call successors, (85), 15 states have call predecessors, (85), 14 states have return successors, (84), 77 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-12 21:30:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 427 transitions. [2024-09-12 21:30:38,001 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 427 transitions. Word has length 126 [2024-09-12 21:30:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:38,001 INFO L474 AbstractCegarLoop]: Abstraction has 341 states and 427 transitions. [2024-09-12 21:30:38,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.6) internal successors, (136), 84 states have internal predecessors, (136), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:30:38,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 427 transitions. [2024-09-12 21:30:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-12 21:30:38,003 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:38,003 INFO L216 NwaCegarLoop]: trace histogram [27, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:38,020 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:38,204 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 21:30:38,204 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1728201798, now seen corresponding path program 20 times [2024-09-12 21:30:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584481088] [2024-09-12 21:30:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:30:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:30:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:30:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:30:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:30:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:30:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:30:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:30:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:30:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 349 proven. 275 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:30:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584481088] [2024-09-12 21:30:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584481088] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072683552] [2024-09-12 21:30:39,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:30:39,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:39,228 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) [2024-09-12 21:30:39,230 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 21:30:39,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:30:39,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:39,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-12 21:30:39,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 24 proven. 600 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:30:40,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 24 proven. 600 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:30:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072683552] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:41,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 113 [2024-09-12 21:30:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551957445] [2024-09-12 21:30:41,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:41,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-09-12 21:30:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-09-12 21:30:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2594, Invalid=10062, Unknown=0, NotChecked=0, Total=12656 [2024-09-12 21:30:41,442 INFO L87 Difference]: Start difference. First operand 341 states and 427 transitions. Second operand has 113 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 111 states have internal predecessors, (148), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:30:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:42,670 INFO L93 Difference]: Finished difference Result 762 states and 985 transitions. [2024-09-12 21:30:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 21:30:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 111 states have internal predecessors, (148), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 124 [2024-09-12 21:30:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:42,675 INFO L225 Difference]: With dead ends: 762 [2024-09-12 21:30:42,675 INFO L226 Difference]: Without dead ends: 760 [2024-09-12 21:30:42,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6964 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4040, Invalid=15420, Unknown=0, NotChecked=0, Total=19460 [2024-09-12 21:30:42,677 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 49 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:42,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1086 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:30:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-09-12 21:30:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 759. [2024-09-12 21:30:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 520 states have (on average 1.0326923076923078) internal successors, (537), 534 states have internal predecessors, (537), 223 states have call successors, (223), 16 states have call predecessors, (223), 15 states have return successors, (222), 208 states have call predecessors, (222), 222 states have call successors, (222) [2024-09-12 21:30:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 982 transitions. [2024-09-12 21:30:42,845 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 982 transitions. Word has length 124 [2024-09-12 21:30:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:42,845 INFO L474 AbstractCegarLoop]: Abstraction has 759 states and 982 transitions. [2024-09-12 21:30:42,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 111 states have internal predecessors, (148), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:30:42,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 982 transitions. [2024-09-12 21:30:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-12 21:30:42,849 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:42,850 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:42,867 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 21:30:43,050 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 21:30:43,050 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:43,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1782177000, now seen corresponding path program 21 times [2024-09-12 21:30:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:43,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097758773] [2024-09-12 21:30:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:30:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:30:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:30:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:30:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:30:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:30:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:30:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:30:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:30:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:30:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:30:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:30:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:30:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:30:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 317 proven. 194 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:30:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097758773] [2024-09-12 21:30:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097758773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330890825] [2024-09-12 21:30:44,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:30:44,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:44,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:44,457 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) [2024-09-12 21:30:44,459 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 21:30:44,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 21:30:44,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:44,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 21:30:44,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:30:45,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:30:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330890825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:48,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:48,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 107 [2024-09-12 21:30:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494162333] [2024-09-12 21:30:48,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:48,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-12 21:30:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-12 21:30:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1300, Invalid=10042, Unknown=0, NotChecked=0, Total=11342 [2024-09-12 21:30:48,224 INFO L87 Difference]: Start difference. First operand 759 states and 982 transitions. Second operand has 107 states, 106 states have (on average 1.509433962264151) internal successors, (160), 105 states have internal predecessors, (160), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 21:30:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:52,060 INFO L93 Difference]: Finished difference Result 812 states and 1026 transitions. [2024-09-12 21:30:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 21:30:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.509433962264151) internal successors, (160), 105 states have internal predecessors, (160), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 134 [2024-09-12 21:30:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:52,069 INFO L225 Difference]: With dead ends: 812 [2024-09-12 21:30:52,071 INFO L226 Difference]: Without dead ends: 710 [2024-09-12 21:30:52,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5884 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2595, Invalid=20661, Unknown=0, NotChecked=0, Total=23256 [2024-09-12 21:30:52,073 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:52,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 621 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:30:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-09-12 21:30:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2024-09-12 21:30:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 487 states have (on average 1.0328542094455853) internal successors, (503), 500 states have internal predecessors, (503), 208 states have call successors, (208), 15 states have call predecessors, (208), 14 states have return successors, (207), 194 states have call predecessors, (207), 207 states have call successors, (207) [2024-09-12 21:30:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 918 transitions. [2024-09-12 21:30:52,259 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 918 transitions. Word has length 134 [2024-09-12 21:30:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:52,260 INFO L474 AbstractCegarLoop]: Abstraction has 710 states and 918 transitions. [2024-09-12 21:30:52,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.509433962264151) internal successors, (160), 105 states have internal predecessors, (160), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 21:30:52,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 918 transitions. [2024-09-12 21:30:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-12 21:30:52,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:52,263 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:52,281 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:52,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 21:30:52,465 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:52,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1880897274, now seen corresponding path program 22 times [2024-09-12 21:30:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183146226] [2024-09-12 21:30:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:30:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:30:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:30:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:30:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:30:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:30:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:30:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:30:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:30:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:30:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:30:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:30:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:30:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:30:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:30:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 362 proven. 215 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:30:53,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:53,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183146226] [2024-09-12 21:30:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183146226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:53,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196774011] [2024-09-12 21:30:53,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:30:53,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:53,872 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) [2024-09-12 21:30:53,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 21:30:53,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:30:53,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:53,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-12 21:30:53,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 32 proven. 545 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:30:54,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 32 proven. 545 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:30:57,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196774011] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:57,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 96 [2024-09-12 21:30:57,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295005540] [2024-09-12 21:30:57,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:57,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 21:30:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 21:30:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1274, Invalid=7846, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 21:30:57,211 INFO L87 Difference]: Start difference. First operand 710 states and 918 transitions. Second operand has 96 states, 95 states have (on average 1.6) internal successors, (152), 94 states have internal predecessors, (152), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 21:31:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:02,560 INFO L93 Difference]: Finished difference Result 889 states and 1127 transitions. [2024-09-12 21:31:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-12 21:31:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.6) internal successors, (152), 94 states have internal predecessors, (152), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 142 [2024-09-12 21:31:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:02,565 INFO L225 Difference]: With dead ends: 889 [2024-09-12 21:31:02,565 INFO L226 Difference]: Without dead ends: 788 [2024-09-12 21:31:02,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2715, Invalid=15107, Unknown=0, NotChecked=0, Total=17822 [2024-09-12 21:31:02,567 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 3766 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 3766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:02,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1023 Invalid, 3929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 3766 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-12 21:31:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2024-09-12 21:31:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 778. [2024-09-12 21:31:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 534 states have (on average 1.0355805243445693) internal successors, (553), 547 states have internal predecessors, (553), 228 states have call successors, (228), 16 states have call predecessors, (228), 15 states have return successors, (227), 214 states have call predecessors, (227), 227 states have call successors, (227) [2024-09-12 21:31:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1008 transitions. [2024-09-12 21:31:02,748 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1008 transitions. Word has length 142 [2024-09-12 21:31:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:02,749 INFO L474 AbstractCegarLoop]: Abstraction has 778 states and 1008 transitions. [2024-09-12 21:31:02,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.6) internal successors, (152), 94 states have internal predecessors, (152), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 21:31:02,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1008 transitions. [2024-09-12 21:31:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-12 21:31:02,753 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:02,753 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:02,770 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 21:31:02,953 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 21:31:02,954 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:02,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1580304088, now seen corresponding path program 23 times [2024-09-12 21:31:02,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:02,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208320639] [2024-09-12 21:31:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:02,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:31:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:31:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:31:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:31:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:31:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:31:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:31:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:31:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:31:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:31:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 410 proven. 237 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:31:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208320639] [2024-09-12 21:31:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208320639] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812884377] [2024-09-12 21:31:04,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:04,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:04,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:04,455 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) [2024-09-12 21:31:04,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 21:31:04,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-12 21:31:04,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:04,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-12 21:31:04,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 57 proven. 638 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-09-12 21:31:06,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 57 proven. 638 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-09-12 21:31:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812884377] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:09,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:09,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44, 44] total 122 [2024-09-12 21:31:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256813868] [2024-09-12 21:31:09,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:09,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-09-12 21:31:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-09-12 21:31:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1846, Invalid=12916, Unknown=0, NotChecked=0, Total=14762 [2024-09-12 21:31:09,429 INFO L87 Difference]: Start difference. First operand 778 states and 1008 transitions. Second operand has 122 states, 121 states have (on average 1.512396694214876) internal successors, (183), 120 states have internal predecessors, (183), 53 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:31:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:17,108 INFO L93 Difference]: Finished difference Result 915 states and 1163 transitions. [2024-09-12 21:31:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-09-12 21:31:17,109 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 1.512396694214876) internal successors, (183), 120 states have internal predecessors, (183), 53 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 150 [2024-09-12 21:31:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:17,113 INFO L225 Difference]: With dead ends: 915 [2024-09-12 21:31:17,113 INFO L226 Difference]: Without dead ends: 807 [2024-09-12 21:31:17,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10129 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=4440, Invalid=27780, Unknown=0, NotChecked=0, Total=32220 [2024-09-12 21:31:17,116 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 4426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:17,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1064 Invalid, 4588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 4426 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-12 21:31:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-09-12 21:31:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-09-12 21:31:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 554 states have (on average 1.036101083032491) internal successors, (574), 567 states have internal predecessors, (574), 237 states have call successors, (237), 16 states have call predecessors, (237), 15 states have return successors, (236), 223 states have call predecessors, (236), 236 states have call successors, (236) [2024-09-12 21:31:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1047 transitions. [2024-09-12 21:31:17,386 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1047 transitions. Word has length 150 [2024-09-12 21:31:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:17,386 INFO L474 AbstractCegarLoop]: Abstraction has 807 states and 1047 transitions. [2024-09-12 21:31:17,387 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 1.512396694214876) internal successors, (183), 120 states have internal predecessors, (183), 53 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:31:17,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1047 transitions. [2024-09-12 21:31:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-12 21:31:17,390 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:17,390 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:17,407 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:17,591 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:17,591 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:17,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1176594234, now seen corresponding path program 24 times [2024-09-12 21:31:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:17,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837243954] [2024-09-12 21:31:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:31:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:31:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:31:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:31:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:31:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:31:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:31:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:31:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:31:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:31:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 461 proven. 260 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:31:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837243954] [2024-09-12 21:31:19,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837243954] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125093910] [2024-09-12 21:31:19,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:19,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:19,270 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) [2024-09-12 21:31:19,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 21:31:19,348 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:31:19,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:19,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 21:31:19,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 36 proven. 685 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:31:20,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 36 proven. 685 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:31:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125093910] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:23,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 106 [2024-09-12 21:31:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071261160] [2024-09-12 21:31:23,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:23,159 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-12 21:31:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-12 21:31:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1553, Invalid=9577, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 21:31:23,161 INFO L87 Difference]: Start difference. First operand 807 states and 1047 transitions. Second operand has 106 states, 105 states have (on average 1.6) internal successors, (168), 104 states have internal predecessors, (168), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-12 21:31:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:29,695 INFO L93 Difference]: Finished difference Result 956 states and 1213 transitions. [2024-09-12 21:31:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-12 21:31:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.6) internal successors, (168), 104 states have internal predecessors, (168), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 158 [2024-09-12 21:31:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:29,700 INFO L225 Difference]: With dead ends: 956 [2024-09-12 21:31:29,700 INFO L226 Difference]: Without dead ends: 845 [2024-09-12 21:31:29,702 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 293 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5700 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3331, Invalid=18425, Unknown=0, NotChecked=0, Total=21756 [2024-09-12 21:31:29,702 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 4877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:29,702 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1352 Invalid, 4877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 4680 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 21:31:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-09-12 21:31:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 837. [2024-09-12 21:31:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 575 states have (on average 1.0365217391304349) internal successors, (596), 588 states have internal predecessors, (596), 245 states have call successors, (245), 17 states have call predecessors, (245), 16 states have return successors, (244), 231 states have call predecessors, (244), 244 states have call successors, (244) [2024-09-12 21:31:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1085 transitions. [2024-09-12 21:31:29,928 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1085 transitions. Word has length 158 [2024-09-12 21:31:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:29,929 INFO L474 AbstractCegarLoop]: Abstraction has 837 states and 1085 transitions. [2024-09-12 21:31:29,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.6) internal successors, (168), 104 states have internal predecessors, (168), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-12 21:31:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1085 transitions. [2024-09-12 21:31:29,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-12 21:31:29,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:29,933 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:29,950 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:30,133 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 21:31:30,134 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:30,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash -902421144, now seen corresponding path program 25 times [2024-09-12 21:31:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:30,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116089415] [2024-09-12 21:31:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:30,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:31:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:31:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:31:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:31:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:31:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:31:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:31:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:31:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:31:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:31:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:31:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:31:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:31:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:31:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:31:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:31:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:31:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:31:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:31:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 515 proven. 284 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:31:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116089415] [2024-09-12 21:31:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116089415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416024177] [2024-09-12 21:31:31,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:31,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:31,906 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) [2024-09-12 21:31:31,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 21:31:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:31,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-12 21:31:31,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:31:33,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:31:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416024177] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:36,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:36,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 111 [2024-09-12 21:31:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337900539] [2024-09-12 21:31:36,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:36,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-09-12 21:31:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-09-12 21:31:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1703, Invalid=10507, Unknown=0, NotChecked=0, Total=12210 [2024-09-12 21:31:36,213 INFO L87 Difference]: Start difference. First operand 837 states and 1085 transitions. Second operand has 111 states, 110 states have (on average 1.6) internal successors, (176), 109 states have internal predecessors, (176), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-12 21:31:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:43,201 INFO L93 Difference]: Finished difference Result 989 states and 1253 transitions. [2024-09-12 21:31:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-09-12 21:31:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.6) internal successors, (176), 109 states have internal predecessors, (176), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 166 [2024-09-12 21:31:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:43,206 INFO L225 Difference]: With dead ends: 989 [2024-09-12 21:31:43,206 INFO L226 Difference]: Without dead ends: 871 [2024-09-12 21:31:43,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 306 SyntacticMatches, 3 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6357 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3663, Invalid=20207, Unknown=0, NotChecked=0, Total=23870 [2024-09-12 21:31:43,208 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 31 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 4709 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 4927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:43,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1220 Invalid, 4927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4709 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 21:31:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-09-12 21:31:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 864. [2024-09-12 21:31:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 594 states have (on average 1.037037037037037) internal successors, (616), 607 states have internal predecessors, (616), 252 states have call successors, (252), 18 states have call predecessors, (252), 17 states have return successors, (251), 238 states have call predecessors, (251), 251 states have call successors, (251) [2024-09-12 21:31:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1119 transitions. [2024-09-12 21:31:43,450 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1119 transitions. Word has length 166 [2024-09-12 21:31:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:43,450 INFO L474 AbstractCegarLoop]: Abstraction has 864 states and 1119 transitions. [2024-09-12 21:31:43,451 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.6) internal successors, (176), 109 states have internal predecessors, (176), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-12 21:31:43,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:43,451 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1119 transitions. [2024-09-12 21:31:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-12 21:31:43,454 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:43,454 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:43,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:43,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 21:31:43,658 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1015830662, now seen corresponding path program 26 times [2024-09-12 21:31:43,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089728404] [2024-09-12 21:31:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:31:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:31:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:31:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:31:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:31:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:31:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:31:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:31:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:31:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:31:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:31:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:31:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:31:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:31:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:31:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:31:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 21:31:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:31:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 572 proven. 309 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:31:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089728404] [2024-09-12 21:31:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089728404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944329081] [2024-09-12 21:31:45,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:45,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:45,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:45,649 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) [2024-09-12 21:31:45,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 21:31:45,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:45,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:45,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-12 21:31:45,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:31:47,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:31:50,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944329081] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:50,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:50,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 116 [2024-09-12 21:31:50,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968218789] [2024-09-12 21:31:50,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:50,248 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-12 21:31:50,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-12 21:31:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1860, Invalid=11480, Unknown=0, NotChecked=0, Total=13340 [2024-09-12 21:31:50,250 INFO L87 Difference]: Start difference. First operand 864 states and 1119 transitions. Second operand has 116 states, 115 states have (on average 1.6) internal successors, (184), 114 states have internal predecessors, (184), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-09-12 21:31:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:57,865 INFO L93 Difference]: Finished difference Result 1019 states and 1289 transitions. [2024-09-12 21:31:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-12 21:31:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.6) internal successors, (184), 114 states have internal predecessors, (184), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 174 [2024-09-12 21:31:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:57,870 INFO L225 Difference]: With dead ends: 1019 [2024-09-12 21:31:57,870 INFO L226 Difference]: Without dead ends: 894 [2024-09-12 21:31:57,871 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 321 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6957 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=4011, Invalid=22071, Unknown=0, NotChecked=0, Total=26082 [2024-09-12 21:31:57,872 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 4929 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 5147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:57,872 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1344 Invalid, 5147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4929 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 21:31:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-09-12 21:31:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 888. [2024-09-12 21:31:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 611 states have (on average 1.0376432078559739) internal successors, (634), 624 states have internal predecessors, (634), 258 states have call successors, (258), 19 states have call predecessors, (258), 18 states have return successors, (257), 244 states have call predecessors, (257), 257 states have call successors, (257) [2024-09-12 21:31:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1149 transitions. [2024-09-12 21:31:58,222 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1149 transitions. Word has length 174 [2024-09-12 21:31:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:58,222 INFO L474 AbstractCegarLoop]: Abstraction has 888 states and 1149 transitions. [2024-09-12 21:31:58,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.6) internal successors, (184), 114 states have internal predecessors, (184), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-09-12 21:31:58,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1149 transitions. [2024-09-12 21:31:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-09-12 21:31:58,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:58,226 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:58,243 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:58,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:58,426 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:58,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1982537304, now seen corresponding path program 27 times [2024-09-12 21:31:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313988196] [2024-09-12 21:31:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:32:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:32:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:32:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:32:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:32:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:32:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:32:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:32:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 21:32:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:32:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 632 proven. 335 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:32:00,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:00,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313988196] [2024-09-12 21:32:00,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313988196] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:00,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257193400] [2024-09-12 21:32:00,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:00,471 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) [2024-09-12 21:32:00,472 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 21:32:00,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-12 21:32:00,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:00,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 21:32:00,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 42 proven. 925 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:32:01,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 42 proven. 925 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:32:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257193400] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:05,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 121 [2024-09-12 21:32:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466131788] [2024-09-12 21:32:05,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:05,426 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-09-12 21:32:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-09-12 21:32:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=12496, Unknown=0, NotChecked=0, Total=14520 [2024-09-12 21:32:05,429 INFO L87 Difference]: Start difference. First operand 888 states and 1149 transitions. Second operand has 121 states, 120 states have (on average 1.6) internal successors, (192), 119 states have internal predecessors, (192), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 21:32:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:13,942 INFO L93 Difference]: Finished difference Result 1042 states and 1318 transitions. [2024-09-12 21:32:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-09-12 21:32:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.6) internal successors, (192), 119 states have internal predecessors, (192), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 182 [2024-09-12 21:32:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:13,948 INFO L225 Difference]: With dead ends: 1042 [2024-09-12 21:32:13,948 INFO L226 Difference]: Without dead ends: 910 [2024-09-12 21:32:13,949 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7488 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4375, Invalid=24017, Unknown=0, NotChecked=0, Total=28392 [2024-09-12 21:32:13,950 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 5629 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 5868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 5629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:13,950 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1452 Invalid, 5868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 5629 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-09-12 21:32:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-09-12 21:32:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 905. [2024-09-12 21:32:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 623 states have (on average 1.0385232744783306) internal successors, (647), 636 states have internal predecessors, (647), 263 states have call successors, (263), 19 states have call predecessors, (263), 18 states have return successors, (262), 249 states have call predecessors, (262), 262 states have call successors, (262) [2024-09-12 21:32:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1172 transitions. [2024-09-12 21:32:14,243 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1172 transitions. Word has length 182 [2024-09-12 21:32:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:14,243 INFO L474 AbstractCegarLoop]: Abstraction has 905 states and 1172 transitions. [2024-09-12 21:32:14,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.6) internal successors, (192), 119 states have internal predecessors, (192), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 21:32:14,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1172 transitions. [2024-09-12 21:32:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-12 21:32:14,248 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:14,248 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:14,265 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-12 21:32:14,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-12 21:32:14,448 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:14,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash 151586886, now seen corresponding path program 28 times [2024-09-12 21:32:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:14,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37717] [2024-09-12 21:32:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:32:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:32:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:32:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:32:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:32:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:32:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:32:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:32:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:32:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:32:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:32:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:32:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:32:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:32:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:32:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:32:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:32:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:32:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:32:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:32:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 21:32:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:32:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 695 proven. 362 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:32:16,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:16,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37717] [2024-09-12 21:32:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37717] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:16,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211961653] [2024-09-12 21:32:16,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:16,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:16,681 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) [2024-09-12 21:32:16,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 21:32:16,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:16,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:16,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-12 21:32:16,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 44 proven. 1013 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:32:18,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 44 proven. 1013 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:32:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211961653] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:21,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 126 [2024-09-12 21:32:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389986752] [2024-09-12 21:32:21,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:21,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-09-12 21:32:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-09-12 21:32:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2195, Invalid=13555, Unknown=0, NotChecked=0, Total=15750 [2024-09-12 21:32:21,899 INFO L87 Difference]: Start difference. First operand 905 states and 1172 transitions. Second operand has 126 states, 125 states have (on average 1.6) internal successors, (200), 124 states have internal predecessors, (200), 68 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) [2024-09-12 21:32:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:31,249 INFO L93 Difference]: Finished difference Result 1062 states and 1343 transitions. [2024-09-12 21:32:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-09-12 21:32:31,249 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.6) internal successors, (200), 124 states have internal predecessors, (200), 68 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 190 [2024-09-12 21:32:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:31,253 INFO L225 Difference]: With dead ends: 1062 [2024-09-12 21:32:31,253 INFO L226 Difference]: Without dead ends: 927 [2024-09-12 21:32:31,254 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8138 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4755, Invalid=26045, Unknown=0, NotChecked=0, Total=30800 [2024-09-12 21:32:31,255 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 6379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:31,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1649 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 6096 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-12 21:32:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-09-12 21:32:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 923. [2024-09-12 21:32:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 636 states have (on average 1.0393081761006289) internal successors, (661), 649 states have internal predecessors, (661), 267 states have call successors, (267), 20 states have call predecessors, (267), 19 states have return successors, (266), 253 states have call predecessors, (266), 266 states have call successors, (266) [2024-09-12 21:32:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1194 transitions. [2024-09-12 21:32:31,513 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1194 transitions. Word has length 190 [2024-09-12 21:32:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:31,513 INFO L474 AbstractCegarLoop]: Abstraction has 923 states and 1194 transitions. [2024-09-12 21:32:31,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.6) internal successors, (200), 124 states have internal predecessors, (200), 68 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) [2024-09-12 21:32:31,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1194 transitions. [2024-09-12 21:32:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-09-12 21:32:31,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:31,516 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:31,536 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 21:32:31,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:31,717 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:31,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2012303896, now seen corresponding path program 29 times [2024-09-12 21:32:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075283557] [2024-09-12 21:32:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:31,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:32:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:32:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:32:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:32:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:32:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:32:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:32:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:32:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:32:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:32:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:32:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:32:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:32:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:32:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:32:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:32:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:32:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 21:32:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:32:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 21:32:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:32:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 21:32:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:32:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 761 proven. 390 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:32:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075283557] [2024-09-12 21:32:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075283557] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734867716] [2024-09-12 21:32:34,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:34,090 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) [2024-09-12 21:32:34,091 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 21:32:34,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-09-12 21:32:34,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:34,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-09-12 21:32:34,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 46 proven. 1105 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:32:35,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 46 proven. 1105 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:32:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734867716] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:39,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 131 [2024-09-12 21:32:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054877982] [2024-09-12 21:32:39,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:39,751 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-12 21:32:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-12 21:32:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=14657, Unknown=0, NotChecked=0, Total=17030 [2024-09-12 21:32:39,754 INFO L87 Difference]: Start difference. First operand 923 states and 1194 transitions. Second operand has 131 states, 130 states have (on average 1.6) internal successors, (208), 129 states have internal predecessors, (208), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 21:32:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:49,924 INFO L93 Difference]: Finished difference Result 1083 states and 1367 transitions. [2024-09-12 21:32:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-09-12 21:32:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 1.6) internal successors, (208), 129 states have internal predecessors, (208), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 198 [2024-09-12 21:32:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:49,928 INFO L225 Difference]: With dead ends: 1083 [2024-09-12 21:32:49,928 INFO L226 Difference]: Without dead ends: 941 [2024-09-12 21:32:49,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 366 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8919 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=5151, Invalid=28155, Unknown=0, NotChecked=0, Total=33306 [2024-09-12 21:32:49,931 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 6396 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 6704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 6396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:49,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1674 Invalid, 6704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 6396 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-09-12 21:32:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-09-12 21:32:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 938. [2024-09-12 21:32:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 647 states have (on average 1.0401854714064915) internal successors, (673), 660 states have internal predecessors, (673), 270 states have call successors, (270), 21 states have call predecessors, (270), 20 states have return successors, (269), 256 states have call predecessors, (269), 269 states have call successors, (269) [2024-09-12 21:32:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1212 transitions. [2024-09-12 21:32:50,203 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1212 transitions. Word has length 198 [2024-09-12 21:32:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:50,203 INFO L474 AbstractCegarLoop]: Abstraction has 938 states and 1212 transitions. [2024-09-12 21:32:50,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 1.6) internal successors, (208), 129 states have internal predecessors, (208), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 21:32:50,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1212 transitions. [2024-09-12 21:32:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-09-12 21:32:50,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:50,207 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:50,224 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:50,407 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 21:32:50,408 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:50,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -277829626, now seen corresponding path program 30 times [2024-09-12 21:32:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499626961] [2024-09-12 21:32:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:32:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:32:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:32:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:32:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:32:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:32:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:32:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:32:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:32:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:32:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:32:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:32:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:32:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:32:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:32:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:32:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:32:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:32:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:32:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:32:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:32:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:32:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 21:32:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:32:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 830 proven. 419 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:32:52,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499626961] [2024-09-12 21:32:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499626961] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877931138] [2024-09-12 21:32:52,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:52,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:52,968 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) [2024-09-12 21:32:52,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 21:32:53,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-12 21:32:53,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:53,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-12 21:32:53,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:32:56,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:33:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877931138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:00,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 161 [2024-09-12 21:33:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444790942] [2024-09-12 21:33:00,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:00,817 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-09-12 21:33:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-09-12 21:33:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2911, Invalid=22849, Unknown=0, NotChecked=0, Total=25760 [2024-09-12 21:33:00,821 INFO L87 Difference]: Start difference. First operand 938 states and 1212 transitions. Second operand has 161 states, 160 states have (on average 1.50625) internal successors, (241), 159 states have internal predecessors, (241), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-09-12 21:33:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:11,250 INFO L93 Difference]: Finished difference Result 1019 states and 1277 transitions. [2024-09-12 21:33:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-12 21:33:11,250 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 160 states have (on average 1.50625) internal successors, (241), 159 states have internal predecessors, (241), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Word has length 206 [2024-09-12 21:33:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:11,255 INFO L225 Difference]: With dead ends: 1019 [2024-09-12 21:33:11,255 INFO L226 Difference]: Without dead ends: 866 [2024-09-12 21:33:11,258 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 356 SyntacticMatches, 3 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14020 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=5952, Invalid=48570, Unknown=0, NotChecked=0, Total=54522 [2024-09-12 21:33:11,259 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 4258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:11,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1401 Invalid, 4258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3929 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-12 21:33:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-09-12 21:33:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2024-09-12 21:33:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 599 states have (on average 1.0417362270450752) internal successors, (624), 611 states have internal predecessors, (624), 246 states have call successors, (246), 21 states have call predecessors, (246), 20 states have return successors, (245), 233 states have call predecessors, (245), 245 states have call successors, (245) [2024-09-12 21:33:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1115 transitions. [2024-09-12 21:33:11,599 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1115 transitions. Word has length 206 [2024-09-12 21:33:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:11,599 INFO L474 AbstractCegarLoop]: Abstraction has 866 states and 1115 transitions. [2024-09-12 21:33:11,600 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 160 states have (on average 1.50625) internal successors, (241), 159 states have internal predecessors, (241), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-09-12 21:33:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1115 transitions. [2024-09-12 21:33:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-09-12 21:33:11,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:11,602 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:11,615 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:11,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 21:33:11,803 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:11,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1387820504, now seen corresponding path program 31 times [2024-09-12 21:33:11,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791914865] [2024-09-12 21:33:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:33:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:33:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:33:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:33:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:33:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:33:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:33:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:33:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:33:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:33:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:33:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:33:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:33:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:33:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:33:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:33:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:33:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 21:33:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:33:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 21:33:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:33:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 21:33:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:33:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 21:33:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:33:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 902 proven. 449 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:33:14,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791914865] [2024-09-12 21:33:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791914865] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553129431] [2024-09-12 21:33:14,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:14,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:14,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:14,600 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) [2024-09-12 21:33:14,601 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 21:33:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-12 21:33:14,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 50 proven. 1301 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:33:16,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 50 proven. 1301 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:33:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553129431] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:21,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:21,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 141 [2024-09-12 21:33:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016889030] [2024-09-12 21:33:21,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:21,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-09-12 21:33:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-09-12 21:33:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2750, Invalid=16990, Unknown=0, NotChecked=0, Total=19740 [2024-09-12 21:33:21,102 INFO L87 Difference]: Start difference. First operand 866 states and 1115 transitions. Second operand has 141 states, 140 states have (on average 1.6) internal successors, (224), 139 states have internal predecessors, (224), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 21:33:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:33,304 INFO L93 Difference]: Finished difference Result 1033 states and 1299 transitions. [2024-09-12 21:33:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-09-12 21:33:33,305 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 140 states have (on average 1.6) internal successors, (224), 139 states have internal predecessors, (224), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 214 [2024-09-12 21:33:33,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:33,310 INFO L225 Difference]: With dead ends: 1033 [2024-09-12 21:33:33,310 INFO L226 Difference]: Without dead ends: 881 [2024-09-12 21:33:33,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 396 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10362 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=5991, Invalid=32621, Unknown=0, NotChecked=0, Total=38612 [2024-09-12 21:33:33,312 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 7626 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 7987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 7626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:33,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1996 Invalid, 7987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 7626 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-09-12 21:33:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-09-12 21:33:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-09-12 21:33:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 609 states have (on average 1.0459770114942528) internal successors, (637), 622 states have internal predecessors, (637), 249 states have call successors, (249), 21 states have call predecessors, (249), 20 states have return successors, (248), 235 states have call predecessors, (248), 248 states have call successors, (248) [2024-09-12 21:33:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1134 transitions. [2024-09-12 21:33:33,703 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1134 transitions. Word has length 214 [2024-09-12 21:33:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:33,703 INFO L474 AbstractCegarLoop]: Abstraction has 879 states and 1134 transitions. [2024-09-12 21:33:33,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 140 states have (on average 1.6) internal successors, (224), 139 states have internal predecessors, (224), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 21:33:33,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1134 transitions. [2024-09-12 21:33:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-09-12 21:33:33,706 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:33,706 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:33,723 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-12 21:33:33,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 21:33:33,907 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:33,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1591687110, now seen corresponding path program 32 times [2024-09-12 21:33:33,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:33,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258909705] [2024-09-12 21:33:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:33,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:33:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:33:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:33:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:33:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:33:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:33:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:33:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:33:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:33:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:33:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:33:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:33:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:33:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:33:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:33:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:33:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:33:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:33:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 21:33:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:33:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 21:33:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:33:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 21:33:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:33:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 21:33:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:33:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 977 proven. 480 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:33:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258909705] [2024-09-12 21:33:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258909705] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536036621] [2024-09-12 21:33:36,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:36,814 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) [2024-09-12 21:33:36,816 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 21:33:36,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:36,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:36,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-09-12 21:33:36,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 52 proven. 1405 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:33:38,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 52 proven. 1405 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:33:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536036621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:43,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:43,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 146 [2024-09-12 21:33:43,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719044320] [2024-09-12 21:33:43,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:43,721 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-12 21:33:43,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-12 21:33:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2949, Invalid=18221, Unknown=0, NotChecked=0, Total=21170 [2024-09-12 21:33:43,724 INFO L87 Difference]: Start difference. First operand 879 states and 1134 transitions. Second operand has 146 states, 145 states have (on average 1.6) internal successors, (232), 144 states have internal predecessors, (232), 80 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-09-12 21:33:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:56,806 INFO L93 Difference]: Finished difference Result 1119 states and 1412 transitions. [2024-09-12 21:33:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-09-12 21:33:56,806 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 1.6) internal successors, (232), 144 states have internal predecessors, (232), 80 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 222 [2024-09-12 21:33:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:56,811 INFO L225 Difference]: With dead ends: 1119 [2024-09-12 21:33:56,811 INFO L226 Difference]: Without dead ends: 964 [2024-09-12 21:33:56,813 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 411 SyntacticMatches, 3 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11124 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=6435, Invalid=34977, Unknown=0, NotChecked=0, Total=41412 [2024-09-12 21:33:56,814 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 39 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 7999 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 8355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 7999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:56,814 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1991 Invalid, 8355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 7999 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-09-12 21:33:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-09-12 21:33:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 963. [2024-09-12 21:33:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 666 states have (on average 1.0435435435435436) internal successors, (695), 679 states have internal predecessors, (695), 275 states have call successors, (275), 22 states have call predecessors, (275), 21 states have return successors, (274), 261 states have call predecessors, (274), 274 states have call successors, (274) [2024-09-12 21:33:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1244 transitions. [2024-09-12 21:33:57,122 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1244 transitions. Word has length 222 [2024-09-12 21:33:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:57,122 INFO L474 AbstractCegarLoop]: Abstraction has 963 states and 1244 transitions. [2024-09-12 21:33:57,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 1.6) internal successors, (232), 144 states have internal predecessors, (232), 80 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-09-12 21:33:57,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1244 transitions. [2024-09-12 21:33:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-09-12 21:33:57,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:57,124 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:57,136 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-12 21:33:57,325 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 21:33:57,325 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1659074152, now seen corresponding path program 33 times [2024-09-12 21:33:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34487373] [2024-09-12 21:33:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:34:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:34:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:34:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:34:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:34:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:34:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:34:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:34:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:34:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:34:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:34:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:34:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:34:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:34:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:34:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:34:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:34:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 21:34:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:34:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 21:34:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:34:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 21:34:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:34:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 21:34:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:34:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 21:34:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:34:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1055 proven. 512 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 21:34:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34487373] [2024-09-12 21:34:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34487373] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463619878] [2024-09-12 21:34:00,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:34:00,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:00,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:00,429 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) [2024-09-12 21:34:00,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 21:34:00,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-09-12 21:34:00,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:00,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-09-12 21:34:00,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 53 proven. 1592 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-09-12 21:34:02,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 53 proven. 1592 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-09-12 21:34:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463619878] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:07,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 64, 64] total 154 [2024-09-12 21:34:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615865818] [2024-09-12 21:34:07,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:08,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2024-09-12 21:34:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2024-09-12 21:34:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3222, Invalid=20340, Unknown=0, NotChecked=0, Total=23562 [2024-09-12 21:34:08,002 INFO L87 Difference]: Start difference. First operand 963 states and 1244 transitions. Second operand has 154 states, 153 states have (on average 1.6013071895424837) internal successors, (245), 152 states have internal predecessors, (245), 83 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-12 21:34:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:24,589 INFO L93 Difference]: Finished difference Result 1172 states and 1481 transitions. [2024-09-12 21:34:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-09-12 21:34:24,590 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 153 states have (on average 1.6013071895424837) internal successors, (245), 152 states have internal predecessors, (245), 83 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 230 [2024-09-12 21:34:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:24,596 INFO L225 Difference]: With dead ends: 1172 [2024-09-12 21:34:24,596 INFO L226 Difference]: Without dead ends: 1010 [2024-09-12 21:34:24,599 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15512 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=8304, Invalid=49056, Unknown=0, NotChecked=0, Total=57360 [2024-09-12 21:34:24,599 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 39 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 8484 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 8901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 8484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:24,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2067 Invalid, 8901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 8484 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-12 21:34:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2024-09-12 21:34:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2024-09-12 21:34:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 698 states have (on average 1.0429799426934097) internal successors, (728), 712 states have internal predecessors, (728), 290 states have call successors, (290), 22 states have call predecessors, (290), 21 states have return successors, (289), 275 states have call predecessors, (289), 289 states have call successors, (289) [2024-09-12 21:34:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1307 transitions. [2024-09-12 21:34:24,950 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1307 transitions. Word has length 230 [2024-09-12 21:34:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:24,950 INFO L474 AbstractCegarLoop]: Abstraction has 1010 states and 1307 transitions. [2024-09-12 21:34:24,951 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 153 states have (on average 1.6013071895424837) internal successors, (245), 152 states have internal predecessors, (245), 83 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-12 21:34:24,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1307 transitions. [2024-09-12 21:34:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-09-12 21:34:24,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:24,955 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:24,972 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-12 21:34:25,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:25,155 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:25,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 628144006, now seen corresponding path program 34 times [2024-09-12 21:34:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919360455] [2024-09-12 21:34:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:34:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:34:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:34:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:34:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:34:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:34:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:34:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:34:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:34:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:34:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:34:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:34:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:34:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:34:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:34:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:34:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:34:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:34:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 21:34:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:34:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 21:34:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:34:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 21:34:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:34:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 21:34:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:34:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 21:34:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:34:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 1136 proven. 545 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:34:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919360455] [2024-09-12 21:34:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919360455] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534508556] [2024-09-12 21:34:28,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:28,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:28,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:28,488 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) [2024-09-12 21:34:28,489 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 21:34:28,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:28,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:28,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-09-12 21:34:28,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 56 proven. 1625 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:34:30,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 56 proven. 1625 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:34:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534508556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:36,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 156 [2024-09-12 21:34:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172489050] [2024-09-12 21:34:36,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:36,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-09-12 21:34:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-09-12 21:34:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3368, Invalid=20812, Unknown=0, NotChecked=0, Total=24180 [2024-09-12 21:34:36,146 INFO L87 Difference]: Start difference. First operand 1010 states and 1307 transitions. Second operand has 156 states, 155 states have (on average 1.6) internal successors, (248), 154 states have internal predecessors, (248), 86 states have call successors, (88), 3 states have call predecessors, (88), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-12 21:34:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:51,715 INFO L93 Difference]: Finished difference Result 1266 states and 1604 transitions. [2024-09-12 21:34:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-09-12 21:34:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 1.6) internal successors, (248), 154 states have internal predecessors, (248), 86 states have call successors, (88), 3 states have call predecessors, (88), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 238 [2024-09-12 21:34:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:51,720 INFO L225 Difference]: With dead ends: 1266 [2024-09-12 21:34:51,720 INFO L226 Difference]: Without dead ends: 1101 [2024-09-12 21:34:51,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12605 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=7371, Invalid=39935, Unknown=0, NotChecked=0, Total=47306 [2024-09-12 21:34:51,722 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 40 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 9449 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 9892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 9449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:51,722 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2510 Invalid, 9892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 9449 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-09-12 21:34:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-09-12 21:34:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1100. [2024-09-12 21:34:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 759 states have (on average 1.0408432147562583) internal successors, (790), 773 states have internal predecessors, (790), 318 states have call successors, (318), 23 states have call predecessors, (318), 22 states have return successors, (317), 303 states have call predecessors, (317), 317 states have call successors, (317) [2024-09-12 21:34:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1425 transitions. [2024-09-12 21:34:52,190 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1425 transitions. Word has length 238 [2024-09-12 21:34:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:52,190 INFO L474 AbstractCegarLoop]: Abstraction has 1100 states and 1425 transitions. [2024-09-12 21:34:52,190 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 1.6) internal successors, (248), 154 states have internal predecessors, (248), 86 states have call successors, (88), 3 states have call predecessors, (88), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-12 21:34:52,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1425 transitions. [2024-09-12 21:34:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-09-12 21:34:52,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:52,195 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:52,212 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 21:34:52,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 21:34:52,396 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:52,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -750357848, now seen corresponding path program 35 times [2024-09-12 21:34:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324168357] [2024-09-12 21:34:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:34:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:34:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:34:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:34:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:34:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:34:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:34:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:34:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:34:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:34:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:34:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:34:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:34:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:34:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:34:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:34:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:34:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:34:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:34:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 21:34:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:34:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 21:34:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:34:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 21:34:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:34:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 21:34:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:34:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 21:34:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:34:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 1220 proven. 579 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:34:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324168357] [2024-09-12 21:34:56,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324168357] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370123847] [2024-09-12 21:34:56,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:56,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:56,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:56,163 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) [2024-09-12 21:34:56,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 21:34:56,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-09-12 21:34:56,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:56,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-09-12 21:34:56,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 58 proven. 1741 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:34:58,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 58 proven. 1741 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:35:04,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370123847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:04,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:04,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 161 [2024-09-12 21:35:04,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370090147] [2024-09-12 21:35:04,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:04,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-09-12 21:35:04,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:04,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-09-12 21:35:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3588, Invalid=22172, Unknown=0, NotChecked=0, Total=25760 [2024-09-12 21:35:04,394 INFO L87 Difference]: Start difference. First operand 1100 states and 1425 transitions. Second operand has 161 states, 160 states have (on average 1.6) internal successors, (256), 159 states have internal predecessors, (256), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-12 21:35:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:21,037 INFO L93 Difference]: Finished difference Result 1324 states and 1679 transitions. [2024-09-12 21:35:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-09-12 21:35:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 160 states have (on average 1.6) internal successors, (256), 159 states have internal predecessors, (256), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 246 [2024-09-12 21:35:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:21,042 INFO L225 Difference]: With dead ends: 1324 [2024-09-12 21:35:21,042 INFO L226 Difference]: Without dead ends: 1152 [2024-09-12 21:35:21,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13572 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=7863, Invalid=42537, Unknown=0, NotChecked=0, Total=50400 [2024-09-12 21:35:21,044 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 9852 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 10327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 9852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:21,044 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2396 Invalid, 10327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 9852 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-09-12 21:35:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2024-09-12 21:35:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2024-09-12 21:35:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 793 states have (on average 1.0403530895334174) internal successors, (825), 808 states have internal predecessors, (825), 334 states have call successors, (334), 23 states have call predecessors, (334), 22 states have return successors, (333), 318 states have call predecessors, (333), 333 states have call successors, (333) [2024-09-12 21:35:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1492 transitions. [2024-09-12 21:35:21,419 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1492 transitions. Word has length 246 [2024-09-12 21:35:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:21,419 INFO L474 AbstractCegarLoop]: Abstraction has 1150 states and 1492 transitions. [2024-09-12 21:35:21,419 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 160 states have (on average 1.6) internal successors, (256), 159 states have internal predecessors, (256), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-12 21:35:21,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1492 transitions. [2024-09-12 21:35:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-09-12 21:35:21,424 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:21,424 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:21,442 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-12 21:35:21,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 21:35:21,625 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:21,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 809576262, now seen corresponding path program 36 times [2024-09-12 21:35:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812529366] [2024-09-12 21:35:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:35:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:35:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:35:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:35:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:35:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:35:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:35:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:35:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:35:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:35:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:35:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:35:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:35:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:35:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:35:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:35:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 21:35:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:35:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 21:35:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:35:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 21:35:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:35:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 21:35:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:35:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 21:35:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:35:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 21:35:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:35:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 21:35:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:35:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 1307 proven. 614 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:35:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812529366] [2024-09-12 21:35:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812529366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:25,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694049233] [2024-09-12 21:35:25,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:35:25,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:25,405 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) [2024-09-12 21:35:25,405 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 21:35:25,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-12 21:35:25,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:25,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-09-12 21:35:25,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 60 proven. 1861 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:35:29,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 60 proven. 1861 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:35:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694049233] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:36,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:36,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 197 [2024-09-12 21:35:36,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13454289] [2024-09-12 21:35:36,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:36,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2024-09-12 21:35:36,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2024-09-12 21:35:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4899, Invalid=33713, Unknown=0, NotChecked=0, Total=38612 [2024-09-12 21:35:36,447 INFO L87 Difference]: Start difference. First operand 1150 states and 1492 transitions. Second operand has 197 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 195 states have internal predecessors, (295), 92 states have call successors, (94), 3 states have call predecessors, (94), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-12 21:35:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:55,643 INFO L93 Difference]: Finished difference Result 1426 states and 1813 transitions. [2024-09-12 21:35:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-09-12 21:35:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 195 states have internal predecessors, (295), 92 states have call successors, (94), 3 states have call predecessors, (94), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) Word has length 254 [2024-09-12 21:35:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:55,649 INFO L225 Difference]: With dead ends: 1426 [2024-09-12 21:35:55,649 INFO L226 Difference]: Without dead ends: 1251 [2024-09-12 21:35:55,652 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22875 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=10464, Invalid=59496, Unknown=0, NotChecked=0, Total=69960 [2024-09-12 21:35:55,652 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 44 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 11601 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 12073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 11601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:55,652 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2867 Invalid, 12073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 11601 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-09-12 21:35:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-09-12 21:35:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2024-09-12 21:35:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 860 states have (on average 1.0383720930232558) internal successors, (893), 876 states have internal predecessors, (893), 365 states have call successors, (365), 24 states have call predecessors, (365), 23 states have return successors, (364), 348 states have call predecessors, (364), 364 states have call successors, (364) [2024-09-12 21:35:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1622 transitions. [2024-09-12 21:35:56,057 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1622 transitions. Word has length 254 [2024-09-12 21:35:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:56,058 INFO L474 AbstractCegarLoop]: Abstraction has 1249 states and 1622 transitions. [2024-09-12 21:35:56,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 195 states have internal predecessors, (295), 92 states have call successors, (94), 3 states have call predecessors, (94), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-12 21:35:56,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1622 transitions. [2024-09-12 21:35:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-09-12 21:35:56,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:56,063 INFO L216 NwaCegarLoop]: trace histogram [55, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:56,078 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-12 21:35:56,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 21:35:56,263 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:56,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1927348922, now seen corresponding path program 37 times [2024-09-12 21:35:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71574484] [2024-09-12 21:35:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:35:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:35:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:35:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:35:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:35:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:35:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:35:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:35:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:35:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:35:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:35:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:35:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:35:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:35:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 21:35:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:35:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 21:35:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:35:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 21:35:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:35:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 21:35:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:35:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 21:35:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:35:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 21:35:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:35:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3919 backedges. 1483 proven. 1136 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:35:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71574484] [2024-09-12 21:35:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71574484] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050065103] [2024-09-12 21:35:59,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:35:59,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:59,709 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) [2024-09-12 21:35:59,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 21:35:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-09-12 21:35:59,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3919 backedges. 52 proven. 2567 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:36:03,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3919 backedges. 52 proven. 2567 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:36:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050065103] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:07,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 225 [2024-09-12 21:36:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156532200] [2024-09-12 21:36:07,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:07,441 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2024-09-12 21:36:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:07,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2024-09-12 21:36:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10469, Invalid=39931, Unknown=0, NotChecked=0, Total=50400 [2024-09-12 21:36:07,447 INFO L87 Difference]: Start difference. First operand 1249 states and 1622 transitions. Second operand has 225 states, 225 states have (on average 1.28) internal successors, (288), 223 states have internal predecessors, (288), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 21:36:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:12,409 INFO L93 Difference]: Finished difference Result 2825 states and 3720 transitions. [2024-09-12 21:36:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-09-12 21:36:12,410 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 225 states have (on average 1.28) internal successors, (288), 223 states have internal predecessors, (288), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 250 [2024-09-12 21:36:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:12,421 INFO L225 Difference]: With dead ends: 2825 [2024-09-12 21:36:12,421 INFO L226 Difference]: Without dead ends: 2823 [2024-09-12 21:36:12,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 414 SyntacticMatches, 2 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29021 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=16304, Invalid=61816, Unknown=0, NotChecked=0, Total=78120 [2024-09-12 21:36:12,425 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 105 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 5561 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 5561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:12,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3069 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 5561 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 21:36:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2024-09-12 21:36:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2822. [2024-09-12 21:36:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 1909 states have (on average 1.0172865374541644) internal successors, (1942), 1937 states have internal predecessors, (1942), 888 states have call successors, (888), 25 states have call predecessors, (888), 24 states have return successors, (887), 859 states have call predecessors, (887), 887 states have call successors, (887) [2024-09-12 21:36:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3717 transitions. [2024-09-12 21:36:13,474 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3717 transitions. Word has length 250 [2024-09-12 21:36:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:13,474 INFO L474 AbstractCegarLoop]: Abstraction has 2822 states and 3717 transitions. [2024-09-12 21:36:13,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 225 states have (on average 1.28) internal successors, (288), 223 states have internal predecessors, (288), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 21:36:13,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3717 transitions. [2024-09-12 21:36:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-09-12 21:36:13,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:13,487 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:13,504 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-12 21:36:13,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-12 21:36:13,688 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash 701791976, now seen corresponding path program 38 times [2024-09-12 21:36:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:13,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452475177] [2024-09-12 21:36:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:36:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:36:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:36:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:36:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:36:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:36:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:36:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:36:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:36:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:36:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:36:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:36:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:36:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:36:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:36:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:36:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:36:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:36:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:36:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:36:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:36:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 21:36:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:36:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 21:36:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:36:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 21:36:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:36:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 21:36:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:36:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 21:36:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:36:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 1397 proven. 650 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 21:36:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452475177] [2024-09-12 21:36:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452475177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457935836] [2024-09-12 21:36:17,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:36:17,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:17,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:17,703 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) [2024-09-12 21:36:17,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-12 21:36:17,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:36:17,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:17,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-12 21:36:17,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 62 proven. 1985 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 21:36:20,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 62 proven. 1985 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 21:36:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457935836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:27,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 171 [2024-09-12 21:36:27,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684297080] [2024-09-12 21:36:27,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:27,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2024-09-12 21:36:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:27,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2024-09-12 21:36:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4049, Invalid=25021, Unknown=0, NotChecked=0, Total=29070 [2024-09-12 21:36:27,033 INFO L87 Difference]: Start difference. First operand 2822 states and 3717 transitions. Second operand has 171 states, 170 states have (on average 1.6) internal successors, (272), 169 states have internal predecessors, (272), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-12 21:36:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:47,035 INFO L93 Difference]: Finished difference Result 3106 states and 4037 transitions. [2024-09-12 21:36:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-09-12 21:36:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 1.6) internal successors, (272), 169 states have internal predecessors, (272), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 262 [2024-09-12 21:36:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:47,047 INFO L225 Difference]: With dead ends: 3106 [2024-09-12 21:36:47,047 INFO L226 Difference]: Without dead ends: 2920 [2024-09-12 21:36:47,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 486 SyntacticMatches, 3 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15339 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=8895, Invalid=47987, Unknown=0, NotChecked=0, Total=56882 [2024-09-12 21:36:47,050 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 43 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 11278 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 11814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 11278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:47,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2875 Invalid, 11814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 11278 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-09-12 21:36:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-09-12 21:36:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2897. [2024-09-12 21:36:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 1960 states have (on average 1.0173469387755103) internal successors, (1994), 1988 states have internal predecessors, (1994), 911 states have call successors, (911), 26 states have call predecessors, (911), 25 states have return successors, (910), 882 states have call predecessors, (910), 910 states have call successors, (910) [2024-09-12 21:36:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3815 transitions. [2024-09-12 21:36:48,097 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3815 transitions. Word has length 262 [2024-09-12 21:36:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:48,097 INFO L474 AbstractCegarLoop]: Abstraction has 2897 states and 3815 transitions. [2024-09-12 21:36:48,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 1.6) internal successors, (272), 169 states have internal predecessors, (272), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-12 21:36:48,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3815 transitions. [2024-09-12 21:36:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-09-12 21:36:48,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:48,104 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:48,116 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-12 21:36:48,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:48,304 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:48,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1265403654, now seen corresponding path program 39 times [2024-09-12 21:36:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:48,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230928204] [2024-09-12 21:36:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:36:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:36:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 21:36:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:36:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 21:36:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:36:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 21:36:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:36:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 21:36:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:36:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 21:36:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:36:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 21:36:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:36:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 21:36:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:36:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 21:36:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:36:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 1490 proven. 687 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:36:52,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230928204] [2024-09-12 21:36:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230928204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221513846] [2024-09-12 21:36:52,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:36:52,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:52,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:52,445 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) [2024-09-12 21:36:52,445 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-12 21:36:52,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-12 21:36:52,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:52,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-09-12 21:36:52,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 64 proven. 2113 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:36:55,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 64 proven. 2113 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:37:02,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221513846] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:02,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:02,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 176 [2024-09-12 21:37:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556843559] [2024-09-12 21:37:02,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:02,005 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2024-09-12 21:37:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2024-09-12 21:37:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=26510, Unknown=0, NotChecked=0, Total=30800 [2024-09-12 21:37:02,008 INFO L87 Difference]: Start difference. First operand 2897 states and 3815 transitions. Second operand has 176 states, 175 states have (on average 1.6) internal successors, (280), 174 states have internal predecessors, (280), 98 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) [2024-09-12 21:37:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:23,413 INFO L93 Difference]: Finished difference Result 3184 states and 4137 transitions. [2024-09-12 21:37:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2024-09-12 21:37:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 175 states have (on average 1.6) internal successors, (280), 174 states have internal predecessors, (280), 98 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) Word has length 270 [2024-09-12 21:37:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:23,427 INFO L225 Difference]: With dead ends: 3184 [2024-09-12 21:37:23,427 INFO L226 Difference]: Without dead ends: 2991 [2024-09-12 21:37:23,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16123 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=9435, Invalid=50835, Unknown=0, NotChecked=0, Total=60270 [2024-09-12 21:37:23,431 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 11908 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 12442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 11908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:23,431 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3106 Invalid, 12442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 11908 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-09-12 21:37:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2024-09-12 21:37:24,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2969. [2024-09-12 21:37:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2009 states have (on average 1.0174216027874565) internal successors, (2044), 2037 states have internal predecessors, (2044), 933 states have call successors, (933), 27 states have call predecessors, (933), 26 states have return successors, (932), 904 states have call predecessors, (932), 932 states have call successors, (932) [2024-09-12 21:37:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 3909 transitions. [2024-09-12 21:37:24,503 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 3909 transitions. Word has length 270 [2024-09-12 21:37:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:24,504 INFO L474 AbstractCegarLoop]: Abstraction has 2969 states and 3909 transitions. [2024-09-12 21:37:24,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 175 states have (on average 1.6) internal successors, (280), 174 states have internal predecessors, (280), 98 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) [2024-09-12 21:37:24,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 3909 transitions. [2024-09-12 21:37:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-09-12 21:37:24,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:24,511 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:24,526 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-12 21:37:24,711 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:24,712 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -755918040, now seen corresponding path program 40 times [2024-09-12 21:37:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504803390] [2024-09-12 21:37:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:28,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:37:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:37:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 21:37:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:37:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 21:37:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:37:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 21:37:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:37:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 21:37:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:37:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 21:37:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:37:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 21:37:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:37:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 21:37:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:37:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 21:37:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:37:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 1586 proven. 725 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:37:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504803390] [2024-09-12 21:37:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504803390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749145002] [2024-09-12 21:37:29,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:37:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:29,060 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) [2024-09-12 21:37:29,061 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-12 21:37:29,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:37:29,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:29,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-12 21:37:29,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 66 proven. 2245 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:37:32,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 66 proven. 2245 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:37:39,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749145002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:39,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:39,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 181 [2024-09-12 21:37:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772187733] [2024-09-12 21:37:39,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:39,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2024-09-12 21:37:39,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2024-09-12 21:37:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4538, Invalid=28042, Unknown=0, NotChecked=0, Total=32580 [2024-09-12 21:37:39,187 INFO L87 Difference]: Start difference. First operand 2969 states and 3909 transitions. Second operand has 181 states, 180 states have (on average 1.6) internal successors, (288), 179 states have internal predecessors, (288), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-09-12 21:38:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:01,963 INFO L93 Difference]: Finished difference Result 3255 states and 4230 transitions. [2024-09-12 21:38:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-09-12 21:38:01,964 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 180 states have (on average 1.6) internal successors, (288), 179 states have internal predecessors, (288), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Word has length 278 [2024-09-12 21:38:01,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:01,975 INFO L225 Difference]: With dead ends: 3255 [2024-09-12 21:38:01,975 INFO L226 Difference]: Without dead ends: 3055 [2024-09-12 21:38:01,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17070 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=9991, Invalid=53765, Unknown=0, NotChecked=0, Total=63756 [2024-09-12 21:38:01,979 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 47 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 12552 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 13120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 12552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:01,979 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3256 Invalid, 13120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 12552 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-09-12 21:38:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2024-09-12 21:38:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3034. [2024-09-12 21:38:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 2053 states have (on average 1.017535314174379) internal successors, (2089), 2081 states have internal predecessors, (2089), 954 states have call successors, (954), 27 states have call predecessors, (954), 26 states have return successors, (953), 925 states have call predecessors, (953), 953 states have call successors, (953) [2024-09-12 21:38:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3996 transitions. [2024-09-12 21:38:03,067 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3996 transitions. Word has length 278 [2024-09-12 21:38:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:03,067 INFO L474 AbstractCegarLoop]: Abstraction has 3034 states and 3996 transitions. [2024-09-12 21:38:03,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 180 states have (on average 1.6) internal successors, (288), 179 states have internal predecessors, (288), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-09-12 21:38:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3996 transitions. [2024-09-12 21:38:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-09-12 21:38:03,075 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:03,075 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:03,088 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-12 21:38:03,276 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-12 21:38:03,276 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:03,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash -502343994, now seen corresponding path program 41 times [2024-09-12 21:38:03,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:03,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388401296] [2024-09-12 21:38:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 21:38:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:38:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 21:38:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:38:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 21:38:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:38:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 21:38:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:38:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 21:38:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:38:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 21:38:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:38:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 21:38:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:38:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 21:38:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:38:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 21:38:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:38:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 1685 proven. 764 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:38:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:07,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388401296] [2024-09-12 21:38:07,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388401296] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262745857] [2024-09-12 21:38:07,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:07,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:07,889 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) [2024-09-12 21:38:07,891 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-12 21:38:08,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-09-12 21:38:08,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:08,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-12 21:38:08,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 68 proven. 2381 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:38:11,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 68 proven. 2381 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:38:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262745857] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:18,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:18,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 186 [2024-09-12 21:38:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776182742] [2024-09-12 21:38:18,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:18,649 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2024-09-12 21:38:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2024-09-12 21:38:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4793, Invalid=29617, Unknown=0, NotChecked=0, Total=34410 [2024-09-12 21:38:18,652 INFO L87 Difference]: Start difference. First operand 3034 states and 3996 transitions. Second operand has 186 states, 185 states have (on average 1.6) internal successors, (296), 184 states have internal predecessors, (296), 104 states have call successors, (106), 3 states have call predecessors, (106), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-12 21:38:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:43,192 INFO L93 Difference]: Finished difference Result 3323 states and 4319 transitions. [2024-09-12 21:38:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-09-12 21:38:43,193 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 185 states have (on average 1.6) internal successors, (296), 184 states have internal predecessors, (296), 104 states have call successors, (106), 3 states have call predecessors, (106), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Word has length 286 [2024-09-12 21:38:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:43,202 INFO L225 Difference]: With dead ends: 3323 [2024-09-12 21:38:43,202 INFO L226 Difference]: Without dead ends: 3120 [2024-09-12 21:38:43,205 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 531 SyntacticMatches, 3 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18192 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=10563, Invalid=56777, Unknown=0, NotChecked=0, Total=67340 [2024-09-12 21:38:43,206 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 46 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 13433 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 14071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 13433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:43,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3387 Invalid, 14071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 13433 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-09-12 21:38:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2024-09-12 21:38:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3100. [2024-09-12 21:38:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2098 states have (on average 1.0176358436606292) internal successors, (2135), 2126 states have internal predecessors, (2135), 974 states have call successors, (974), 28 states have call predecessors, (974), 27 states have return successors, (973), 945 states have call predecessors, (973), 973 states have call successors, (973) [2024-09-12 21:38:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4082 transitions. [2024-09-12 21:38:44,430 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4082 transitions. Word has length 286 [2024-09-12 21:38:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:44,430 INFO L474 AbstractCegarLoop]: Abstraction has 3100 states and 4082 transitions. [2024-09-12 21:38:44,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 185 states have (on average 1.6) internal successors, (296), 184 states have internal predecessors, (296), 104 states have call successors, (106), 3 states have call predecessors, (106), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-12 21:38:44,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4082 transitions. [2024-09-12 21:38:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-09-12 21:38:44,436 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:44,437 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:44,449 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-12 21:38:44,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-12 21:38:44,637 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:44,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1140734104, now seen corresponding path program 42 times [2024-09-12 21:38:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:44,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824648858] [2024-09-12 21:38:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:38:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:38:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:38:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:38:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:38:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:38:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:38:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:38:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:38:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:38:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:38:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:38:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:38:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:38:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:38:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:38:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:38:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 21:38:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:38:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 21:38:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:38:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 21:38:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:38:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 21:38:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:38:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 21:38:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:38:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 21:38:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:38:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 21:38:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:38:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 21:38:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:38:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 21:38:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:38:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 1787 proven. 804 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:38:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:49,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824648858] [2024-09-12 21:38:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824648858] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:49,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8822363] [2024-09-12 21:38:49,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:38:49,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:49,481 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) [2024-09-12 21:38:49,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-12 21:38:49,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2024-09-12 21:38:49,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:49,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-09-12 21:38:49,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 70 proven. 2521 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:38:55,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 70 proven. 2521 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:39:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8822363] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:03,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 227 [2024-09-12 21:39:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362890943] [2024-09-12 21:39:03,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:03,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 227 states [2024-09-12 21:39:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2024-09-12 21:39:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5760, Invalid=45542, Unknown=0, NotChecked=0, Total=51302 [2024-09-12 21:39:03,997 INFO L87 Difference]: Start difference. First operand 3100 states and 4082 transitions. Second operand has 227 states, 226 states have (on average 1.5044247787610618) internal successors, (340), 225 states have internal predecessors, (340), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2024-09-12 21:39:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:28,837 INFO L93 Difference]: Finished difference Result 3201 states and 4162 transitions. [2024-09-12 21:39:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-09-12 21:39:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 227 states, 226 states have (on average 1.5044247787610618) internal successors, (340), 225 states have internal predecessors, (340), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) Word has length 294 [2024-09-12 21:39:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:28,846 INFO L225 Difference]: With dead ends: 3201 [2024-09-12 21:39:28,846 INFO L226 Difference]: Without dead ends: 2991 [2024-09-12 21:39:28,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28472 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=11925, Invalid=98631, Unknown=0, NotChecked=0, Total=110556 [2024-09-12 21:39:28,850 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 45 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 6410 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 7043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 6410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:28,850 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2385 Invalid, 7043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 6410 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-09-12 21:39:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2024-09-12 21:39:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2991. [2024-09-12 21:39:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2025 states have (on average 1.0177777777777777) internal successors, (2061), 2052 states have internal predecessors, (2061), 939 states have call successors, (939), 27 states have call predecessors, (939), 26 states have return successors, (938), 911 states have call predecessors, (938), 938 states have call successors, (938) [2024-09-12 21:39:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 3938 transitions. [2024-09-12 21:39:30,045 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 3938 transitions. Word has length 294 [2024-09-12 21:39:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:30,045 INFO L474 AbstractCegarLoop]: Abstraction has 2991 states and 3938 transitions. [2024-09-12 21:39:30,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 227 states, 226 states have (on average 1.5044247787610618) internal successors, (340), 225 states have internal predecessors, (340), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2024-09-12 21:39:30,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 3938 transitions. [2024-09-12 21:39:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-09-12 21:39:30,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:30,051 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:30,064 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-12 21:39:30,251 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:30,251 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:30,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1102834042, now seen corresponding path program 43 times [2024-09-12 21:39:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723340646] [2024-09-12 21:39:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:39:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:39:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:39:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:39:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:39:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:39:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:39:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:39:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:39:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:39:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:39:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:39:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:39:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:39:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:39:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:39:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:39:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:39:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 21:39:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:39:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 21:39:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:39:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 21:39:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:39:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 21:39:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:39:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 21:39:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:39:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 21:39:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:39:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 21:39:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:39:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 21:39:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:39:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 21:39:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:39:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 1892 proven. 845 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 21:39:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723340646] [2024-09-12 21:39:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723340646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012430771] [2024-09-12 21:39:35,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:39:35,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:35,411 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) [2024-09-12 21:39:35,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-12 21:39:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:35,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 153 conjuncts are in the unsatisfiable core [2024-09-12 21:39:35,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 72 proven. 2665 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 21:39:38,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 72 proven. 2665 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 21:39:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012430771] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:47,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80, 80] total 196 [2024-09-12 21:39:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263823678] [2024-09-12 21:39:47,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:47,297 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-09-12 21:39:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-09-12 21:39:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5324, Invalid=32896, Unknown=0, NotChecked=0, Total=38220 [2024-09-12 21:39:47,300 INFO L87 Difference]: Start difference. First operand 2991 states and 3938 transitions. Second operand has 196 states, 195 states have (on average 1.6) internal successors, (312), 194 states have internal predecessors, (312), 110 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-09-12 21:40:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:14,829 INFO L93 Difference]: Finished difference Result 3334 states and 4335 transitions. [2024-09-12 21:40:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-09-12 21:40:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 1.6) internal successors, (312), 194 states have internal predecessors, (312), 110 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Word has length 302 [2024-09-12 21:40:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:14,839 INFO L225 Difference]: With dead ends: 3334 [2024-09-12 21:40:14,839 INFO L226 Difference]: Without dead ends: 3125 [2024-09-12 21:40:14,843 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 561 SyntacticMatches, 3 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20229 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=11755, Invalid=63047, Unknown=0, NotChecked=0, Total=74802 [2024-09-12 21:40:14,844 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 48 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 14051 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 14762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 14051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:14,844 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3419 Invalid, 14762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 14051 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-09-12 21:40:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2024-09-12 21:40:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3107. [2024-09-12 21:40:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2104 states have (on average 1.0185361216730038) internal successors, (2143), 2131 states have internal predecessors, (2143), 975 states have call successors, (975), 28 states have call predecessors, (975), 27 states have return successors, (974), 947 states have call predecessors, (974), 974 states have call successors, (974) [2024-09-12 21:40:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4092 transitions. [2024-09-12 21:40:16,176 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4092 transitions. Word has length 302 [2024-09-12 21:40:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:16,176 INFO L474 AbstractCegarLoop]: Abstraction has 3107 states and 4092 transitions. [2024-09-12 21:40:16,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 1.6) internal successors, (312), 194 states have internal predecessors, (312), 110 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-09-12 21:40:16,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4092 transitions. [2024-09-12 21:40:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-09-12 21:40:16,181 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:16,181 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:16,193 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-12 21:40:16,382 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:16,382 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:16,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1821834328, now seen corresponding path program 44 times [2024-09-12 21:40:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360497363] [2024-09-12 21:40:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:40:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:40:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:40:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:40:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:40:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:40:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:40:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:40:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:40:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:40:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:40:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:40:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:40:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:40:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:40:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 21:40:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:40:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 21:40:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:40:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 21:40:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:40:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 21:40:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:40:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 21:40:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:40:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 21:40:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:40:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 21:40:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:40:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 21:40:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:40:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 21:40:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:40:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 21:40:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:40:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 21:40:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:40:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 2000 proven. 887 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:40:21,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360497363] [2024-09-12 21:40:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360497363] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974471952] [2024-09-12 21:40:21,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:40:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:21,743 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) [2024-09-12 21:40:21,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-12 21:40:21,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:40:21,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:21,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-12 21:40:21,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 74 proven. 2813 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:40:28,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 74 proven. 2813 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:40:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974471952] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:37,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82, 82] total 239 [2024-09-12 21:40:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603298015] [2024-09-12 21:40:37,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:37,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 239 states [2024-09-12 21:40:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2024-09-12 21:40:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7195, Invalid=49687, Unknown=0, NotChecked=0, Total=56882 [2024-09-12 21:40:37,737 INFO L87 Difference]: Start difference. First operand 3107 states and 4092 transitions. Second operand has 239 states, 238 states have (on average 1.504201680672269) internal successors, (358), 237 states have internal predecessors, (358), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-09-12 21:41:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:08,674 INFO L93 Difference]: Finished difference Result 3393 states and 4412 transitions. [2024-09-12 21:41:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-09-12 21:41:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 239 states, 238 states have (on average 1.504201680672269) internal successors, (358), 237 states have internal predecessors, (358), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 310 [2024-09-12 21:41:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:08,685 INFO L225 Difference]: With dead ends: 3393 [2024-09-12 21:41:08,685 INFO L226 Difference]: Without dead ends: 3177 [2024-09-12 21:41:08,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 538 SyntacticMatches, 3 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34118 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=15469, Invalid=87251, Unknown=0, NotChecked=0, Total=102720 [2024-09-12 21:41:08,691 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 50 mSDsluCounter, 3887 mSDsCounter, 0 mSdLazyCounter, 16109 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 16820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 16109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:08,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3934 Invalid, 16820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 16109 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-09-12 21:41:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2024-09-12 21:41:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 3160. [2024-09-12 21:41:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 2140 states have (on average 1.0186915887850467) internal successors, (2180), 2167 states have internal predecessors, (2180), 992 states have call successors, (992), 28 states have call predecessors, (992), 27 states have return successors, (991), 964 states have call predecessors, (991), 991 states have call successors, (991) [2024-09-12 21:41:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4163 transitions. [2024-09-12 21:41:10,098 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4163 transitions. Word has length 310 [2024-09-12 21:41:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:10,098 INFO L474 AbstractCegarLoop]: Abstraction has 3160 states and 4163 transitions. [2024-09-12 21:41:10,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 239 states, 238 states have (on average 1.504201680672269) internal successors, (358), 237 states have internal predecessors, (358), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-09-12 21:41:10,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4163 transitions. [2024-09-12 21:41:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-09-12 21:41:10,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:10,104 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:10,118 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-12 21:41:10,305 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-12 21:41:10,305 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -920107450, now seen corresponding path program 45 times [2024-09-12 21:41:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983463229] [2024-09-12 21:41:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:41:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:41:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:41:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:41:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:41:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:41:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:41:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:41:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:41:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:41:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:41:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:41:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:41:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:41:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:41:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:41:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:41:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:41:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:41:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:41:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 21:41:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:41:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 21:41:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:41:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 21:41:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:41:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 21:41:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:41:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 21:41:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:41:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 21:41:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:41:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 21:41:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:41:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 21:41:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:41:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 21:41:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:41:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 2111 proven. 930 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 21:41:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983463229] [2024-09-12 21:41:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983463229] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234607435] [2024-09-12 21:41:15,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:41:15,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:15,972 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) [2024-09-12 21:41:15,973 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-12 21:41:16,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-12 21:41:16,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:16,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-09-12 21:41:16,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 81 proven. 3071 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-09-12 21:41:19,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 81 proven. 3071 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-09-12 21:41:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234607435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:29,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 86, 86] total 209 [2024-09-12 21:41:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363544293] [2024-09-12 21:41:29,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:29,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2024-09-12 21:41:29,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2024-09-12 21:41:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5971, Invalid=37501, Unknown=0, NotChecked=0, Total=43472 [2024-09-12 21:41:29,338 INFO L87 Difference]: Start difference. First operand 3160 states and 4163 transitions. Second operand has 209 states, 208 states have (on average 1.6009615384615385) internal successors, (333), 207 states have internal predecessors, (333), 116 states have call successors, (118), 3 states have call predecessors, (118), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2024-09-12 21:42:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:05,358 INFO L93 Difference]: Finished difference Result 3433 states and 4469 transitions. [2024-09-12 21:42:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2024-09-12 21:42:05,358 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 208 states have (on average 1.6009615384615385) internal successors, (333), 207 states have internal predecessors, (333), 116 states have call successors, (118), 3 states have call predecessors, (118), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Word has length 318 [2024-09-12 21:42:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:05,369 INFO L225 Difference]: With dead ends: 3433 [2024-09-12 21:42:05,369 INFO L226 Difference]: Without dead ends: 3214 [2024-09-12 21:42:05,374 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 590 SyntacticMatches, 1 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29277 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=15622, Invalid=91634, Unknown=0, NotChecked=0, Total=107256 [2024-09-12 21:42:05,375 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 51 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 16055 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 16849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 16055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:05,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3839 Invalid, 16849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 16055 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-09-12 21:42:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2024-09-12 21:42:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3214. [2024-09-12 21:42:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 2177 states have (on average 1.018833256775379) internal successors, (2218), 2204 states have internal predecessors, (2218), 1008 states have call successors, (1008), 29 states have call predecessors, (1008), 28 states have return successors, (1007), 980 states have call predecessors, (1007), 1007 states have call successors, (1007) [2024-09-12 21:42:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 4233 transitions. [2024-09-12 21:42:06,876 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 4233 transitions. Word has length 318 [2024-09-12 21:42:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:06,877 INFO L474 AbstractCegarLoop]: Abstraction has 3214 states and 4233 transitions. [2024-09-12 21:42:06,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 208 states have (on average 1.6009615384615385) internal successors, (333), 207 states have internal predecessors, (333), 116 states have call successors, (118), 3 states have call predecessors, (118), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2024-09-12 21:42:06,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 4233 transitions. [2024-09-12 21:42:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-09-12 21:42:06,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:06,883 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:06,895 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-12 21:42:07,083 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-12 21:42:07,083 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:07,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 143347688, now seen corresponding path program 46 times [2024-09-12 21:42:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339272594] [2024-09-12 21:42:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:42:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:42:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:42:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:42:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:42:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:42:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:42:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:42:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:42:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:42:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:42:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:42:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:42:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:42:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:42:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 21:42:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:42:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 21:42:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:42:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 21:42:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:42:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 21:42:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:42:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 21:42:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:42:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 21:42:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:42:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 21:42:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:42:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 21:42:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:42:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 21:42:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:42:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 21:42:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:42:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 21:42:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:42:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 21:42:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:42:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 2225 proven. 974 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:42:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339272594] [2024-09-12 21:42:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339272594] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477307142] [2024-09-12 21:42:13,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:42:13,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:13,135 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) [2024-09-12 21:42:13,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-12 21:42:13,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:42:13,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:13,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-12 21:42:13,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 78 proven. 3121 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:42:17,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 78 proven. 3121 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:42:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477307142] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:26,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:26,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86, 86] total 211 [2024-09-12 21:42:26,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196014538] [2024-09-12 21:42:26,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:26,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2024-09-12 21:42:26,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2024-09-12 21:42:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6173, Invalid=38137, Unknown=0, NotChecked=0, Total=44310 [2024-09-12 21:42:26,633 INFO L87 Difference]: Start difference. First operand 3214 states and 4233 transitions. Second operand has 211 states, 210 states have (on average 1.6) internal successors, (336), 209 states have internal predecessors, (336), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Killed by 15