./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Ackermann03.c -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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:04:19,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:04:19,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:04:19,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:04:19,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:04:19,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:04:19,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:04:19,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:04:19,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:04:19,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:04:19,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:04:19,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:04:19,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:04:19,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:04:19,391 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:04:19,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:04:19,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:04:19,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:04:19,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:04:19,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:04:19,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:04:19,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:04:19,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:04:19,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:04:19,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:04:19,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:04:19,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:04:19,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:04:19,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:04:19,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:04:19,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:04:19,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:04:19,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:19,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:04:19,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:04:19,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:04:19,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:04:19,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:04:19,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:04:19,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:04:19,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:04:19,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:04:19,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:04:19,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:04:19,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:04:19,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:04:19,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:04:19,664 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:04:19,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-25 00:04:21,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:04:21,177 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:04:21,177 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-25 00:04:21,184 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/757b3be48/f4d9f73a3ade478a8c17d7a1be346a9c/FLAG3d7452e72 [2024-09-25 00:04:21,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/757b3be48/f4d9f73a3ade478a8c17d7a1be346a9c [2024-09-25 00:04:21,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:04:21,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:04:21,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:21,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:04:21,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:04:21,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a148aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21, skipping insertion in model container [2024-09-25 00:04:21,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,626 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:04:21,775 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2024-09-25 00:04:21,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:21,799 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:04:21,815 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2024-09-25 00:04:21,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:21,841 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:04:21,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21 WrapperNode [2024-09-25 00:04:21,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:21,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:21,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:04:21,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:04:21,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,874 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:04:21,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:21,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:04:21,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:04:21,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:04:21,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,922 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]. [2024-09-25 00:04:21,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:04:21,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:04:21,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:04:21,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:04:21,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (1/1) ... [2024-09-25 00:04:21,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:21,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:21,972 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) [2024-09-25 00:04:21,973 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 [2024-09-25 00:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:04:22,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:04:22,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-25 00:04:22,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-25 00:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:04:22,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:04:22,094 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:04:22,096 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:04:22,264 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-25 00:04:22,264 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:04:22,288 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:04:22,288 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:04:22,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:22 BoogieIcfgContainer [2024-09-25 00:04:22,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:04:22,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:04:22,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:04:22,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:04:22,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:21" (1/3) ... [2024-09-25 00:04:22,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:22, skipping insertion in model container [2024-09-25 00:04:22,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:21" (2/3) ... [2024-09-25 00:04:22,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:22, skipping insertion in model container [2024-09-25 00:04:22,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:22" (3/3) ... [2024-09-25 00:04:22,300 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-09-25 00:04:22,313 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:04:22,314 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:04:22,370 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:04:22,377 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;@27b0835a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:04:22,378 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:04:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:04:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-25 00:04:22,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:22,388 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:22,389 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:22,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-25 00:04:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148247287] [2024-09-25 00:04:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:22,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:22,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:22,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:04:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148247287] [2024-09-25 00:04:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148247287] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:22,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:04:22,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941203958] [2024-09-25 00:04:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:22,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:04:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:04:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:04:22,735 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:22,876 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-25 00:04:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:04:22,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-25 00:04:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:22,885 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:04:22,885 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:04:22,888 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:04:22,891 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:22,891 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:04:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-25 00:04:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 00:04:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-25 00:04:22,930 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-25 00:04:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:22,931 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-25 00:04:22,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:22,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-25 00:04:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-25 00:04:22,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:22,934 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:22,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:04:22,935 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:22,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-25 00:04:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887173162] [2024-09-25 00:04:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:22,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:22,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:23,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887173162] [2024-09-25 00:04:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887173162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405450284] [2024-09-25 00:04:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:23,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:23,063 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) [2024-09-25 00:04:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:04:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:23,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-25 00:04:23,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:23,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405450284] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:23,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-25 00:04:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036796605] [2024-09-25 00:04:23,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:23,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:04:23,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:04:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:04:23,306 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:23,491 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-25 00:04:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:04:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-25 00:04:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:23,494 INFO L225 Difference]: With dead ends: 83 [2024-09-25 00:04:23,494 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 00:04:23,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:04:23,498 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:23,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 00:04:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-25 00:04:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-25 00:04:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-25 00:04:23,529 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-25 00:04:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:23,529 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-25 00:04:23,531 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:23,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-25 00:04:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-25 00:04:23,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:23,536 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:23,550 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:23,737 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 [2024-09-25 00:04:23,738 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:23,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-25 00:04:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:23,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482640674] [2024-09-25 00:04:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:23,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:23,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:23,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:04:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482640674] [2024-09-25 00:04:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482640674] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760938750] [2024-09-25 00:04:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:24,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:24,120 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) [2024-09-25 00:04:24,130 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:04:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:24,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:04:24,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-25 00:04:24,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:04:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760938750] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:24,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-25 00:04:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647233392] [2024-09-25 00:04:24,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:24,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 00:04:24,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 00:04:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:04:24,800 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:24,898 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-25 00:04:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:04:24,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-25 00:04:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:24,903 INFO L225 Difference]: With dead ends: 123 [2024-09-25 00:04:24,903 INFO L226 Difference]: Without dead ends: 56 [2024-09-25 00:04:24,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:04:24,908 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:24,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-25 00:04:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-25 00:04:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-25 00:04:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-25 00:04:24,921 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-25 00:04:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:24,921 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-25 00:04:24,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:24,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-25 00:04:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-25 00:04:24,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:24,924 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:24,938 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:04:25,126 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 [2024-09-25 00:04:25,126 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:25,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-25 00:04:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890778896] [2024-09-25 00:04:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:25,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 00:04:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 00:04:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890778896] [2024-09-25 00:04:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890778896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28883427] [2024-09-25 00:04:25,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:04:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:25,883 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) [2024-09-25 00:04:25,890 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:04:25,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:04:25,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:25,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-25 00:04:25,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-25 00:04:26,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-25 00:04:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28883427] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:27,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:27,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-25 00:04:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975012274] [2024-09-25 00:04:27,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:27,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-25 00:04:27,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-25 00:04:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-25 00:04:27,471 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:27,900 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-25 00:04:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:04:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-25 00:04:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:27,904 INFO L225 Difference]: With dead ends: 122 [2024-09-25 00:04:27,904 INFO L226 Difference]: Without dead ends: 74 [2024-09-25 00:04:27,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 00:04:27,906 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:27,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 193 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:04:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-25 00:04:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-25 00:04:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-25 00:04:27,921 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-25 00:04:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:27,922 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-25 00:04:27,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:27,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-25 00:04:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-25 00:04:27,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:27,924 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:27,940 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:28,126 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 [2024-09-25 00:04:28,127 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:28,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-25 00:04:28,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:28,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417709526] [2024-09-25 00:04:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 00:04:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-25 00:04:28,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:28,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417709526] [2024-09-25 00:04:28,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417709526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:28,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189142567] [2024-09-25 00:04:28,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:04:28,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:28,755 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) [2024-09-25 00:04:28,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:04:28,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-25 00:04:28,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:28,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:04:28,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-25 00:04:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-25 00:04:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189142567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:30,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-25 00:04:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945660421] [2024-09-25 00:04:30,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:30,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:04:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:04:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:04:30,022 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-25 00:04:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:30,492 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-25 00:04:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 00:04:30,494 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-25 00:04:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:30,499 INFO L225 Difference]: With dead ends: 122 [2024-09-25 00:04:30,499 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 00:04:30,500 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 00:04:30,501 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:30,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 239 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:04:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 00:04:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-25 00:04:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-25 00:04:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-25 00:04:30,513 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-25 00:04:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:30,513 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-25 00:04:30,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-25 00:04:30,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-25 00:04:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-25 00:04:30,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:30,516 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:30,533 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:04:30,720 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 [2024-09-25 00:04:30,721 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:30,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-25 00:04:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28956516] [2024-09-25 00:04:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 00:04:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 00:04:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 00:04:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 00:04:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-25 00:04:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28956516] [2024-09-25 00:04:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28956516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:31,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343650820] [2024-09-25 00:04:31,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:04:31,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:31,744 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) [2024-09-25 00:04:31,756 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:04:31,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:04:31,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:31,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:04:31,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 282 proven. 646 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2024-09-25 00:04:32,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 284 proven. 692 refuted. 0 times theorem prover too weak. 1646 trivial. 0 not checked. [2024-09-25 00:04:34,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343650820] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:34,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:34,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 11] total 27 [2024-09-25 00:04:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102480020] [2024-09-25 00:04:34,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:34,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-25 00:04:34,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-25 00:04:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:04:34,195 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-25 00:04:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:35,331 INFO L93 Difference]: Finished difference Result 198 states and 405 transitions. [2024-09-25 00:04:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-25 00:04:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 227 [2024-09-25 00:04:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:35,334 INFO L225 Difference]: With dead ends: 198 [2024-09-25 00:04:35,334 INFO L226 Difference]: Without dead ends: 73 [2024-09-25 00:04:35,337 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 504 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1247, Invalid=5073, Unknown=0, NotChecked=0, Total=6320 [2024-09-25 00:04:35,338 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:35,338 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 266 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:04:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-25 00:04:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-09-25 00:04:35,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-25 00:04:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-25 00:04:35,351 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 227 [2024-09-25 00:04:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:35,352 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-25 00:04:35,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-25 00:04:35,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-25 00:04:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-25 00:04:35,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:35,356 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:35,374 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:35,557 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 [2024-09-25 00:04:35,557 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:35,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-25 00:04:35,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:35,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271613164] [2024-09-25 00:04:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:35,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:35,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:35,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:35,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-25 00:04:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271613164] [2024-09-25 00:04:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271613164] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655755902] [2024-09-25 00:04:36,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:04:36,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:36,540 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) [2024-09-25 00:04:36,547 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:04:36,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-25 00:04:36,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:36,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-25 00:04:36,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-25 00:04:36,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-25 00:04:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655755902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:40,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:40,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-25 00:04:40,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030499829] [2024-09-25 00:04:40,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:40,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 00:04:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 00:04:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:04:40,155 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:04:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:40,868 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2024-09-25 00:04:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-25 00:04:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-25 00:04:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:40,872 INFO L225 Difference]: With dead ends: 143 [2024-09-25 00:04:40,872 INFO L226 Difference]: Without dead ends: 86 [2024-09-25 00:04:40,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2024-09-25 00:04:40,874 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:40,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 350 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:04:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-25 00:04:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2024-09-25 00:04:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (23), 16 states have call predecessors, (23), 12 states have call successors, (23) [2024-09-25 00:04:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-09-25 00:04:40,909 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 160 [2024-09-25 00:04:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:40,909 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-09-25 00:04:40,909 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:04:40,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-09-25 00:04:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-25 00:04:40,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:40,915 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:40,934 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:04:41,115 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 [2024-09-25 00:04:41,116 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:41,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 6 times [2024-09-25 00:04:41,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:41,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327700925] [2024-09-25 00:04:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-25 00:04:42,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:42,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327700925] [2024-09-25 00:04:42,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327700925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:42,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31722961] [2024-09-25 00:04:42,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:04:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:42,233 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) [2024-09-25 00:04:42,234 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:04:42,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-25 00:04:42,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:42,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-25 00:04:42,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-25 00:04:42,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-25 00:04:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31722961] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:45,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-25 00:04:45,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217311929] [2024-09-25 00:04:45,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:45,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 00:04:45,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:45,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 00:04:45,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:04:45,770 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:04:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:46,388 INFO L93 Difference]: Finished difference Result 161 states and 212 transitions. [2024-09-25 00:04:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-25 00:04:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-25 00:04:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:46,391 INFO L225 Difference]: With dead ends: 161 [2024-09-25 00:04:46,391 INFO L226 Difference]: Without dead ends: 99 [2024-09-25 00:04:46,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=928, Invalid=3764, Unknown=0, NotChecked=0, Total=4692 [2024-09-25 00:04:46,393 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:46,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 293 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:04:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-25 00:04:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2024-09-25 00:04:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (27), 18 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 00:04:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-09-25 00:04:46,404 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 173 [2024-09-25 00:04:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:46,405 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-09-25 00:04:46,405 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:04:46,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-09-25 00:04:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-25 00:04:46,407 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:46,407 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:46,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:04:46,610 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 [2024-09-25 00:04:46,611 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:46,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 7 times [2024-09-25 00:04:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:46,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973478177] [2024-09-25 00:04:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:46,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:04:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-25 00:04:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973478177] [2024-09-25 00:04:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973478177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458477700] [2024-09-25 00:04:47,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:04:47,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:47,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:47,816 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) [2024-09-25 00:04:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:04:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:48,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-25 00:04:48,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-25 00:04:48,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-25 00:04:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458477700] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:48,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:48,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2024-09-25 00:04:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432199411] [2024-09-25 00:04:48,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:48,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:04:48,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:04:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:04:48,949 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-25 00:04:51,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:51,076 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2024-09-25 00:04:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-25 00:04:51,076 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 186 [2024-09-25 00:04:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:51,078 INFO L225 Difference]: With dead ends: 149 [2024-09-25 00:04:51,078 INFO L226 Difference]: Without dead ends: 133 [2024-09-25 00:04:51,080 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=883, Invalid=6257, Unknown=0, NotChecked=0, Total=7140 [2024-09-25 00:04:51,082 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:51,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 608 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-25 00:04:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-25 00:04:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2024-09-25 00:04:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-09-25 00:04:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-09-25 00:04:51,109 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 186 [2024-09-25 00:04:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:51,110 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-09-25 00:04:51,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-25 00:04:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-09-25 00:04:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-09-25 00:04:51,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:51,113 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:51,127 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:51,313 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 [2024-09-25 00:04:51,314 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:51,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 296710076, now seen corresponding path program 8 times [2024-09-25 00:04:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639009901] [2024-09-25 00:04:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:51,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:51,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:51,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:04:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 00:04:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2024-09-25 00:04:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639009901] [2024-09-25 00:04:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639009901] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231350502] [2024-09-25 00:04:52,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:04:52,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:52,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:52,868 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) [2024-09-25 00:04:52,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:04:53,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:04:53,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:53,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-25 00:04:53,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-09-25 00:04:53,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-25 00:04:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231350502] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:57,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:57,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2024-09-25 00:04:57,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479326702] [2024-09-25 00:04:57,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:57,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-25 00:04:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-25 00:04:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2024-09-25 00:04:57,384 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-25 00:04:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:58,062 INFO L93 Difference]: Finished difference Result 211 states and 289 transitions. [2024-09-25 00:04:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 00:04:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) Word has length 199 [2024-09-25 00:04:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:58,065 INFO L225 Difference]: With dead ends: 211 [2024-09-25 00:04:58,066 INFO L226 Difference]: Without dead ends: 130 [2024-09-25 00:04:58,068 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 427 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-09-25 00:04:58,069 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:58,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 407 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:04:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-25 00:04:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-09-25 00:04:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 18 states have call successors, (18), 8 states have call predecessors, (18), 15 states have return successors, (40), 24 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-25 00:04:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-09-25 00:04:58,099 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 199 [2024-09-25 00:04:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:58,099 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-09-25 00:04:58,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-25 00:04:58,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-09-25 00:04:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-25 00:04:58,105 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:58,105 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:58,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:04:58,306 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 [2024-09-25 00:04:58,307 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:58,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash 62516586, now seen corresponding path program 9 times [2024-09-25 00:04:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260898184] [2024-09-25 00:04:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:58,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 00:04:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:04:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 00:04:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-09-25 00:04:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260898184] [2024-09-25 00:04:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260898184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937082036] [2024-09-25 00:04:59,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:04:59,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:59,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:59,205 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) [2024-09-25 00:04:59,212 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:04:59,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-25 00:04:59,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:59,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-25 00:04:59,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-25 00:04:59,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-09-25 00:05:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937082036] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:01,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:01,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-09-25 00:05:01,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877658882] [2024-09-25 00:05:01,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:01,468 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:05:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:05:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:05:01,469 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:05:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:01,787 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2024-09-25 00:05:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:05:01,787 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) Word has length 212 [2024-09-25 00:05:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:01,792 INFO L225 Difference]: With dead ends: 186 [2024-09-25 00:05:01,792 INFO L226 Difference]: Without dead ends: 100 [2024-09-25 00:05:01,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 467 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 00:05:01,794 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:01,794 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 299 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-25 00:05:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-09-25 00:05:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 58 states have internal predecessors, (64), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2024-09-25 00:05:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-09-25 00:05:01,818 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 212 [2024-09-25 00:05:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:01,819 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-09-25 00:05:01,820 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:05:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-09-25 00:05:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-25 00:05:01,824 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:01,824 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:01,851 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-25 00:05:02,025 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 [2024-09-25 00:05:02,025 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:02,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1614501087, now seen corresponding path program 10 times [2024-09-25 00:05:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012527511] [2024-09-25 00:05:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:05:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:05:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:05:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:05:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:05:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:05:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 00:05:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:05:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:05:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:05:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 00:05:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2024-09-25 00:05:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012527511] [2024-09-25 00:05:03,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012527511] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880623603] [2024-09-25 00:05:03,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:05:03,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:03,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:03,046 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) [2024-09-25 00:05:03,047 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:05:03,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:05:03,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:03,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:05:03,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2024-09-25 00:05:03,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2024-09-25 00:05:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880623603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:04,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2024-09-25 00:05:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743746991] [2024-09-25 00:05:04,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:04,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:05:04,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:05:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:05:04,084 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-25 00:05:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:04,193 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2024-09-25 00:05:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:05:04,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) Word has length 284 [2024-09-25 00:05:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:04,195 INFO L225 Difference]: With dead ends: 92 [2024-09-25 00:05:04,195 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:05:04,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 642 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:05:04,197 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:04,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:05:04,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:05:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 00:05:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:05:04,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2024-09-25 00:05:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:04,199 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:05:04,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-25 00:05:04,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:05:04,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:05:04,202 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:05:04,218 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:04,403 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 [2024-09-25 00:05:04,406 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-09-25 00:05:04,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:05:41,311 WARN L293 SmtUtils]: Spent 11.33s on a formula simplification. DAG size of input: 225 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-25 00:05:48,266 WARN L293 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 202 DAG size of output: 184 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-25 00:06:02,533 WARN L293 SmtUtils]: Spent 13.25s on a formula simplification. DAG size of input: 210 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-25 00:06:15,631 WARN L293 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 206 DAG size of output: 279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-25 00:06:21,408 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:06:21,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:06:21 BoogieIcfgContainer [2024-09-25 00:06:21,434 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:06:21,434 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:06:21,434 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:06:21,435 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:06:21,436 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:22" (3/4) ... [2024-09-25 00:06:21,437 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:06:21,485 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:06:21,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:06:21,486 INFO L158 Benchmark]: Toolchain (without parser) took 119886.57ms. Allocated memory was 169.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 103.2MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 424.7MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,486 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:06:21,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.14ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 91.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.85ms. Allocated memory is still 169.9MB. Free memory was 91.7MB in the beginning and 141.9MB in the end (delta: -50.2MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,487 INFO L158 Benchmark]: Boogie Preprocessor took 62.60ms. Allocated memory is still 169.9MB. Free memory was 141.9MB in the beginning and 140.7MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,487 INFO L158 Benchmark]: RCFGBuilder took 350.68ms. Allocated memory is still 169.9MB. Free memory was 140.7MB in the beginning and 128.2MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,488 INFO L158 Benchmark]: TraceAbstraction took 119142.35ms. Allocated memory was 169.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 127.5MB in the beginning and 1.1GB in the end (delta: -992.8MB). Peak memory consumption was 971.6MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,488 INFO L158 Benchmark]: Witness Printer took 50.81ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 00:06:21,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.14ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 91.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.85ms. Allocated memory is still 169.9MB. Free memory was 91.7MB in the beginning and 141.9MB in the end (delta: -50.2MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.60ms. Allocated memory is still 169.9MB. Free memory was 141.9MB in the beginning and 140.7MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 350.68ms. Allocated memory is still 169.9MB. Free memory was 140.7MB in the beginning and 128.2MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 119142.35ms. Allocated memory was 169.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 127.5MB in the beginning and 1.1GB in the end (delta: -992.8MB). Peak memory consumption was 971.6MB. Max. memory is 16.1GB. * Witness Printer took 50.81ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.1s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 614 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2713 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7222 IncrementalHoareTripleChecker+Invalid, 7923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 369 mSDtfsCounter, 7222 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4363 GetRequests, 3743 SyntacticMatches, 92 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7590 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=10, InterpolantAutomatonStates: 332, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 172 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 30.0s InterpolantComputationTime, 3417 NumberOfCodeBlocks, 3277 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 5084 ConstructedInterpolants, 0 QuantifiedInterpolants, 9354 SizeOfPredicates, 48 NumberOfNonLiveVariables, 4685 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 34 InterpolantComputations, 1 PerfectInterpolantSequences, 39778/49815 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((((((((((((((\result == 5) && (n == 3)) || (((\result == 3) && (n == 1)) && (m == 1))) || (m == 0)) || (((2 <= m) && (3 <= n)) && (5 <= \result))) || (((n == 0) && (\result == 2)) && (m == 1))) || (((2 <= m) && (2 <= n)) && (\result == 7))) || ((\result == 5) && (n == 1))) || (((\result == 7) && (5 <= n)) && (m == 1))) || (((n == 0) && (2 <= m)) && (\result == 3))) || ((\result == 6) && (n == 4))) || (((5 <= \result) && (6 <= n)) && (m == 1))) || (((\result == 4) && (n == 2)) && (m == 1))) || ((3 <= m) && (3 <= \result))) && ((0 < m) || (\result == ((long long) n + 1)))) && (((((\result == 3) && (m == 1)) || (1 < m)) || (\result == 2)) || (n != 1))) && (((m == 0) || (n == 0)) || (0 < n))) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:06:21,544 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE