./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.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 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.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 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 --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-27b4987-m [2024-09-21 11:32:58,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:32:58,471 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:32:58,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:32:58,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:32:58,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:32:58,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:32:58,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:32:58,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:32:58,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:32:58,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:32:58,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:32:58,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:32:58,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:32:58,512 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:32:58,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:32:58,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:32:58,513 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:32:58,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:32:58,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:32:58,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:32:58,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:32:58,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:32:58,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:32:58,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:32:58,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:32:58,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:32:58,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:32:58,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:32:58,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:32:58,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:32:58,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:32:58,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:32:58,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:32:58,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:32:58,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:32:58,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:32:58,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:32:58,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:32:58,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:32:58,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:32:58,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:32:58,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:32:58,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:32:58,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:32:58,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:32:58,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:32:58,767 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:32:58,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2024-09-21 11:33:00,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:33:00,301 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:33:00,301 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2024-09-21 11:33:00,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/47b852443/da3a1185ba184e3793cd58ed7f9e0f0b/FLAG8fb142fdd [2024-09-21 11:33:00,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/47b852443/da3a1185ba184e3793cd58ed7f9e0f0b [2024-09-21 11:33:00,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:33:00,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:33:00,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:33:00,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:33:00,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:33:00,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0980bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00, skipping insertion in model container [2024-09-21 11:33:00,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:33:00,888 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/loops-crafted-1/mono-crafted_14.c[319,332] [2024-09-21 11:33:00,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:33:00,910 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:33:00,921 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/loops-crafted-1/mono-crafted_14.c[319,332] [2024-09-21 11:33:00,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:33:00,938 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:33:00,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00 WrapperNode [2024-09-21 11:33:00,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:33:00,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:33:00,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:33:00,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:33:00,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,955 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:33:00,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:33:00,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:33:00,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:33:00,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:33:00,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,977 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]. [2024-09-21 11:33:00,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:33:00,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:33:00,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:33:00,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:33:00,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (1/1) ... [2024-09-21 11:33:00,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:33:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:01,020 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) [2024-09-21 11:33:01,026 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 [2024-09-21 11:33:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:33:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:33:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:33:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:33:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:33:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:33:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:33:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:33:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:33:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:33:01,137 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:33:01,139 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:33:01,299 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 11:33:01,301 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:33:01,328 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:33:01,328 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-21 11:33:01,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:01 BoogieIcfgContainer [2024-09-21 11:33:01,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:33:01,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:33:01,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:33:01,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:33:01,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:33:00" (1/3) ... [2024-09-21 11:33:01,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb7855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:01, skipping insertion in model container [2024-09-21 11:33:01,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:00" (2/3) ... [2024-09-21 11:33:01,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb7855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:01, skipping insertion in model container [2024-09-21 11:33:01,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:01" (3/3) ... [2024-09-21 11:33:01,341 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_14.c [2024-09-21 11:33:01,360 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:33:01,361 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:33:01,425 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:33:01,431 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;@2d5e5483, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:33:01,431 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:33:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-21 11:33:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-21 11:33:01,442 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:01,443 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:01,444 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:01,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1213422553, now seen corresponding path program 1 times [2024-09-21 11:33:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905154461] [2024-09-21 11:33:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:33:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905154461] [2024-09-21 11:33:01,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905154461] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:33:01,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:33:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:33:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601198589] [2024-09-21 11:33:01,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:33:01,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:33:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:33:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:33:01,630 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:01,654 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-09-21 11:33:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:33:01,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-21 11:33:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:01,663 INFO L225 Difference]: With dead ends: 33 [2024-09-21 11:33:01,663 INFO L226 Difference]: Without dead ends: 16 [2024-09-21 11:33:01,666 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:33:01,670 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:01,671 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:33:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-21 11:33:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-21 11:33:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-09-21 11:33:01,708 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-09-21 11:33:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:01,710 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-09-21 11:33:01,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-09-21 11:33:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-21 11:33:01,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:01,713 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:01,713 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:33:01,714 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:01,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash 923436959, now seen corresponding path program 1 times [2024-09-21 11:33:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:01,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437908323] [2024-09-21 11:33:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:33:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437908323] [2024-09-21 11:33:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437908323] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:33:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:33:01,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-21 11:33:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584188788] [2024-09-21 11:33:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:33:01,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-21 11:33:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-21 11:33:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:33:01,811 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:01,830 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2024-09-21 11:33:01,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-21 11:33:01,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-21 11:33:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:01,832 INFO L225 Difference]: With dead ends: 29 [2024-09-21 11:33:01,832 INFO L226 Difference]: Without dead ends: 18 [2024-09-21 11:33:01,833 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:33:01,835 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:01,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:33:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-21 11:33:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-21 11:33:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-09-21 11:33:01,845 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2024-09-21 11:33:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:01,846 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-09-21 11:33:01,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-09-21 11:33:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 11:33:01,848 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:01,848 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:01,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 11:33:01,849 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:01,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1421107102, now seen corresponding path program 1 times [2024-09-21 11:33:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099716226] [2024-09-21 11:33:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:33:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099716226] [2024-09-21 11:33:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099716226] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:33:01,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:33:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-21 11:33:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238466132] [2024-09-21 11:33:01,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:33:01,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-21 11:33:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-21 11:33:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:33:01,956 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:01,979 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-21 11:33:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-21 11:33:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-21 11:33:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:01,984 INFO L225 Difference]: With dead ends: 27 [2024-09-21 11:33:01,984 INFO L226 Difference]: Without dead ends: 19 [2024-09-21 11:33:01,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:33:01,985 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:01,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:33:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-21 11:33:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-21 11:33:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-09-21 11:33:01,994 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2024-09-21 11:33:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:01,995 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-09-21 11:33:01,996 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:01,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-09-21 11:33:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-21 11:33:01,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:01,999 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:01,999 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-21 11:33:02,000 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:02,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1070032961, now seen corresponding path program 1 times [2024-09-21 11:33:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642584353] [2024-09-21 11:33:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:33:02,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:02,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642584353] [2024-09-21 11:33:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642584353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796979912] [2024-09-21 11:33:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:02,137 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) [2024-09-21 11:33:02,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:33:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-21 11:33:02,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:33:02,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:33:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796979912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:02,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:02,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-21 11:33:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006224114] [2024-09-21 11:33:02,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:02,293 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-21 11:33:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-21 11:33:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:33:02,296 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:02,403 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2024-09-21 11:33:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 11:33:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-21 11:33:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:02,405 INFO L225 Difference]: With dead ends: 37 [2024-09-21 11:33:02,405 INFO L226 Difference]: Without dead ends: 25 [2024-09-21 11:33:02,406 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:33:02,409 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:02,410 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:33:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-21 11:33:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-21 11:33:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-21 11:33:02,415 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-21 11:33:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:02,415 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-21 11:33:02,415 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:02,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-21 11:33:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 11:33:02,417 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:02,417 INFO L216 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:02,430 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:33:02,617 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:02,618 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:02,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1037717745, now seen corresponding path program 1 times [2024-09-21 11:33:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237630808] [2024-09-21 11:33:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:02,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237630808] [2024-09-21 11:33:02,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237630808] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457042511] [2024-09-21 11:33:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:02,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:02,784 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) [2024-09-21 11:33:02,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:33:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:02,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 11:33:02,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:02,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457042511] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:02,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:02,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-09-21 11:33:02,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761519595] [2024-09-21 11:33:02,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:02,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-21 11:33:02,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-21 11:33:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-21 11:33:02,907 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:02,943 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-09-21 11:33:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 11:33:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-09-21 11:33:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:02,944 INFO L225 Difference]: With dead ends: 49 [2024-09-21 11:33:02,945 INFO L226 Difference]: Without dead ends: 33 [2024-09-21 11:33:02,945 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-21 11:33:02,946 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:02,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:33:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-21 11:33:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-21 11:33:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-21 11:33:02,953 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2024-09-21 11:33:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:02,953 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-21 11:33:02,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:02,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-21 11:33:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 11:33:02,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:02,955 INFO L216 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:02,970 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:33:03,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:03,155 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:03,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash 676738715, now seen corresponding path program 2 times [2024-09-21 11:33:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:03,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670035919] [2024-09-21 11:33:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:03,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670035919] [2024-09-21 11:33:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670035919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037170930] [2024-09-21 11:33:03,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:33:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:03,346 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) [2024-09-21 11:33:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:33:03,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:33:03,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:03,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 11:33:03,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:03,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:03,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037170930] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:03,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:03,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-21 11:33:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540215557] [2024-09-21 11:33:03,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:03,613 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:33:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:33:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:33:03,616 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:03,688 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-09-21 11:33:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 11:33:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-09-21 11:33:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:03,691 INFO L225 Difference]: With dead ends: 65 [2024-09-21 11:33:03,693 INFO L226 Difference]: Without dead ends: 49 [2024-09-21 11:33:03,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:33:03,694 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:03,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:33:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-21 11:33:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-21 11:33:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:33:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-09-21 11:33:03,724 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2024-09-21 11:33:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:03,725 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-09-21 11:33:03,725 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-09-21 11:33:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-21 11:33:03,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:03,727 INFO L216 NwaCegarLoop]: trace histogram [16, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:03,741 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 11:33:03,931 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-21 11:33:03,932 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:03,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1101291955, now seen corresponding path program 3 times [2024-09-21 11:33:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003528628] [2024-09-21 11:33:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:04,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:33:04,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:04,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003528628] [2024-09-21 11:33:04,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003528628] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:04,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142400864] [2024-09-21 11:33:04,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:33:04,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:04,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:04,380 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) [2024-09-21 11:33:04,381 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:33:04,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-21 11:33:04,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:04,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-21 11:33:04,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-09-21 11:33:04,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-21 11:33:04,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142400864] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:04,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:04,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 6] total 24 [2024-09-21 11:33:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097696915] [2024-09-21 11:33:04,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:04,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-21 11:33:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-21 11:33:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-09-21 11:33:04,802 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:05,136 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-09-21 11:33:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-21 11:33:05,136 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-09-21 11:33:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:05,138 INFO L225 Difference]: With dead ends: 77 [2024-09-21 11:33:05,138 INFO L226 Difference]: Without dead ends: 61 [2024-09-21 11:33:05,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 11:33:05,139 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:05,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 151 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:33:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-21 11:33:05,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-09-21 11:33:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2024-09-21 11:33:05,151 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 45 [2024-09-21 11:33:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:05,151 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2024-09-21 11:33:05,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:05,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2024-09-21 11:33:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-21 11:33:05,153 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:05,153 INFO L216 NwaCegarLoop]: trace histogram [17, 15, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:05,170 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 11:33:05,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:05,357 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:05,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash -897066773, now seen corresponding path program 4 times [2024-09-21 11:33:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689616440] [2024-09-21 11:33:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:05,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689616440] [2024-09-21 11:33:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689616440] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802730895] [2024-09-21 11:33:05,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:33:05,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:05,763 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) [2024-09-21 11:33:05,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:33:05,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:33:05,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:05,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-21 11:33:05,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:05,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802730895] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:06,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:06,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-09-21 11:33:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574234146] [2024-09-21 11:33:06,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:06,377 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-21 11:33:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-21 11:33:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 11:33:06,381 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:06,492 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-09-21 11:33:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-21 11:33:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-09-21 11:33:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:06,495 INFO L225 Difference]: With dead ends: 113 [2024-09-21 11:33:06,497 INFO L226 Difference]: Without dead ends: 91 [2024-09-21 11:33:06,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 11:33:06,499 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:06,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:33:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-21 11:33:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-09-21 11:33:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 84 states have internal predecessors, (88), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2024-09-21 11:33:06,522 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 48 [2024-09-21 11:33:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:06,523 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2024-09-21 11:33:06,523 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:06,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2024-09-21 11:33:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-21 11:33:06,528 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:06,528 INFO L216 NwaCegarLoop]: trace histogram [34, 32, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:06,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 11:33:06,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-21 11:33:06,729 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:06,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 827762136, now seen corresponding path program 5 times [2024-09-21 11:33:06,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:06,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87614615] [2024-09-21 11:33:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:07,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87614615] [2024-09-21 11:33:07,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87614615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123309507] [2024-09-21 11:33:07,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:33:07,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:07,860 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) [2024-09-21 11:33:07,862 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:33:07,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-09-21 11:33:07,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:07,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-21 11:33:07,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:08,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123309507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:09,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-09-21 11:33:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947719051] [2024-09-21 11:33:09,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:09,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-21 11:33:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-21 11:33:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-09-21 11:33:09,517 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:09,724 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2024-09-21 11:33:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-21 11:33:09,725 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2024-09-21 11:33:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:09,727 INFO L225 Difference]: With dead ends: 181 [2024-09-21 11:33:09,730 INFO L226 Difference]: Without dead ends: 159 [2024-09-21 11:33:09,731 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-09-21 11:33:09,732 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:09,733 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:33:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-09-21 11:33:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-09-21 11:33:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 150 states have (on average 1.04) internal successors, (156), 152 states have internal predecessors, (156), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 164 transitions. [2024-09-21 11:33:09,760 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 164 transitions. Word has length 82 [2024-09-21 11:33:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:09,761 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 164 transitions. [2024-09-21 11:33:09,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:09,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 164 transitions. [2024-09-21 11:33:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-21 11:33:09,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:09,767 INFO L216 NwaCegarLoop]: trace histogram [68, 66, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:09,784 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 11:33:09,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:09,968 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:09,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1698259470, now seen corresponding path program 6 times [2024-09-21 11:33:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:09,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672546677] [2024-09-21 11:33:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:09,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:13,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4630 backedges. 201 proven. 4422 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 11:33:13,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:13,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672546677] [2024-09-21 11:33:13,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672546677] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:13,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797799480] [2024-09-21 11:33:13,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:33:13,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:13,503 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) [2024-09-21 11:33:13,505 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:33:13,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-21 11:33:13,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:13,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:33:13,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4630 backedges. 202 proven. 6 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2024-09-21 11:33:13,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4630 backedges. 202 proven. 6 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2024-09-21 11:33:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797799480] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:14,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:14,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 7, 7] total 79 [2024-09-21 11:33:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533792451] [2024-09-21 11:33:14,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:14,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-21 11:33:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-21 11:33:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2411, Invalid=3751, Unknown=0, NotChecked=0, Total=6162 [2024-09-21 11:33:14,154 INFO L87 Difference]: Start difference. First operand 159 states and 164 transitions. Second operand has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 79 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:16,128 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2024-09-21 11:33:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-21 11:33:16,133 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 79 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2024-09-21 11:33:16,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:16,135 INFO L225 Difference]: With dead ends: 195 [2024-09-21 11:33:16,136 INFO L226 Difference]: Without dead ends: 173 [2024-09-21 11:33:16,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7570, Invalid=13600, Unknown=0, NotChecked=0, Total=21170 [2024-09-21 11:33:16,142 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:16,142 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 148 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:33:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-21 11:33:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-09-21 11:33:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 158 states have (on average 1.0379746835443038) internal successors, (164), 160 states have internal predecessors, (164), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2024-09-21 11:33:16,169 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 150 [2024-09-21 11:33:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:16,169 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2024-09-21 11:33:16,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 79 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:16,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2024-09-21 11:33:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-21 11:33:16,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:16,175 INFO L216 NwaCegarLoop]: trace histogram [69, 67, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:16,192 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-21 11:33:16,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:16,380 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:16,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -629009809, now seen corresponding path program 7 times [2024-09-21 11:33:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896782582] [2024-09-21 11:33:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:19,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4806 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:19,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896782582] [2024-09-21 11:33:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896782582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912315541] [2024-09-21 11:33:19,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:33:19,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:19,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:19,649 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) [2024-09-21 11:33:19,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 11:33:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:19,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-21 11:33:19,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4806 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:19,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4806 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912315541] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:24,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 139 [2024-09-21 11:33:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588877570] [2024-09-21 11:33:24,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:24,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-09-21 11:33:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-09-21 11:33:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-09-21 11:33:24,506 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:24,912 INFO L93 Difference]: Finished difference Result 333 states and 412 transitions. [2024-09-21 11:33:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-09-21 11:33:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158 [2024-09-21 11:33:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:24,915 INFO L225 Difference]: With dead ends: 333 [2024-09-21 11:33:24,915 INFO L226 Difference]: Without dead ends: 305 [2024-09-21 11:33:24,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-09-21 11:33:24,917 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:24,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:33:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-09-21 11:33:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-09-21 11:33:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 296 states have (on average 1.0202702702702702) internal successors, (302), 298 states have internal predecessors, (302), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 310 transitions. [2024-09-21 11:33:24,942 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 310 transitions. Word has length 158 [2024-09-21 11:33:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:24,943 INFO L474 AbstractCegarLoop]: Abstraction has 305 states and 310 transitions. [2024-09-21 11:33:24,943 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:24,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 310 transitions. [2024-09-21 11:33:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-09-21 11:33:24,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:24,947 INFO L216 NwaCegarLoop]: trace histogram [138, 136, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:24,963 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-21 11:33:25,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:25,152 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:25,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1946243840, now seen corresponding path program 8 times [2024-09-21 11:33:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801451700] [2024-09-21 11:33:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:38,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:33:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:33:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19089 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:33:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801451700] [2024-09-21 11:33:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801451700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:33:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137834817] [2024-09-21 11:33:38,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:33:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:33:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:33:38,334 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) [2024-09-21 11:33:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 11:33:38,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:33:38,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:33:38,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 274 conjuncts are in the unsatisfiable core [2024-09-21 11:33:38,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:33:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19089 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:38,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:33:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19089 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:33:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137834817] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:33:56,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:33:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 277 [2024-09-21 11:33:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791154647] [2024-09-21 11:33:56,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:33:56,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-09-21 11:33:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:33:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-09-21 11:33:56,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-09-21 11:33:56,988 INFO L87 Difference]: Start difference. First operand 305 states and 310 transitions. Second operand has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:33:58,044 INFO L93 Difference]: Finished difference Result 609 states and 757 transitions. [2024-09-21 11:33:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-09-21 11:33:58,044 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 296 [2024-09-21 11:33:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:33:58,047 INFO L225 Difference]: With dead ends: 609 [2024-09-21 11:33:58,047 INFO L226 Difference]: Without dead ends: 581 [2024-09-21 11:33:58,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-09-21 11:33:58,050 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 11:33:58,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 11:33:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-09-21 11:33:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-09-21 11:33:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 572 states have (on average 1.0104895104895104) internal successors, (578), 574 states have internal predecessors, (578), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:33:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 586 transitions. [2024-09-21 11:33:58,094 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 586 transitions. Word has length 296 [2024-09-21 11:33:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:33:58,094 INFO L474 AbstractCegarLoop]: Abstraction has 581 states and 586 transitions. [2024-09-21 11:33:58,095 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:33:58,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 586 transitions. [2024-09-21 11:33:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-09-21 11:33:58,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:33:58,104 INFO L216 NwaCegarLoop]: trace histogram [276, 274, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:33:58,122 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-21 11:33:58,305 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-21 11:33:58,305 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:33:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:33:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1450148254, now seen corresponding path program 9 times [2024-09-21 11:33:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:33:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507793993] [2024-09-21 11:33:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:33:58,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:33:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:35:00,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:35:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:35:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 76221 backedges. 825 proven. 75350 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-21 11:35:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:35:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507793993] [2024-09-21 11:35:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507793993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:35:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299878400] [2024-09-21 11:35:00,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:35:00,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:35:00,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:35:00,885 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) [2024-09-21 11:35:00,887 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 11:35:01,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-21 11:35:01,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:35:01,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:35:01,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:35:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 76221 backedges. 826 proven. 45 refuted. 0 times theorem prover too weak. 75350 trivial. 0 not checked. [2024-09-21 11:35:02,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:35:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 76221 backedges. 826 proven. 45 refuted. 0 times theorem prover too weak. 75350 trivial. 0 not checked. [2024-09-21 11:35:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299878400] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:35:04,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:35:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 13, 13] total 299 [2024-09-21 11:35:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908556591] [2024-09-21 11:35:04,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:35:04,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 299 states [2024-09-21 11:35:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:35:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 299 interpolants. [2024-09-21 11:35:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38501, Invalid=50601, Unknown=0, NotChecked=0, Total=89102 [2024-09-21 11:35:04,110 INFO L87 Difference]: Start difference. First operand 581 states and 586 transitions. Second operand has 299 states, 299 states have (on average 1.9866220735785953) internal successors, (594), 299 states have internal predecessors, (594), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:35:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:35:32,397 INFO L93 Difference]: Finished difference Result 629 states and 655 transitions. [2024-09-21 11:35:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2024-09-21 11:35:32,398 INFO L78 Accepts]: Start accepts. Automaton has has 299 states, 299 states have (on average 1.9866220735785953) internal successors, (594), 299 states have internal predecessors, (594), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 572 [2024-09-21 11:35:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:35:32,402 INFO L225 Difference]: With dead ends: 629 [2024-09-21 11:35:32,402 INFO L226 Difference]: Without dead ends: 601 [2024-09-21 11:35:32,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1697 GetRequests, 1125 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44054 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=120176, Invalid=208726, Unknown=0, NotChecked=0, Total=328902 [2024-09-21 11:35:32,418 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:35:32,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 113 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:35:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-09-21 11:35:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 595. [2024-09-21 11:35:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 586 states have (on average 1.0102389078498293) internal successors, (592), 588 states have internal predecessors, (592), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:35:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 600 transitions. [2024-09-21 11:35:32,467 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 600 transitions. Word has length 572 [2024-09-21 11:35:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:35:32,467 INFO L474 AbstractCegarLoop]: Abstraction has 595 states and 600 transitions. [2024-09-21 11:35:32,468 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 299 states, 299 states have (on average 1.9866220735785953) internal successors, (594), 299 states have internal predecessors, (594), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:35:32,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:35:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 600 transitions. [2024-09-21 11:35:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-09-21 11:35:32,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:35:32,477 INFO L216 NwaCegarLoop]: trace histogram [277, 275, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:35:32,495 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 11:35:32,681 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-21 11:35:32,682 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:35:32,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:35:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -492529089, now seen corresponding path program 10 times [2024-09-21 11:35:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:35:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022920479] [2024-09-21 11:35:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:35:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:35:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:36:37,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:36:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:36:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 76960 backedges. 828 proven. 75900 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-21 11:36:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:36:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022920479] [2024-09-21 11:36:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022920479] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:36:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455176839] [2024-09-21 11:36:37,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:36:37,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:36:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:36:37,429 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) [2024-09-21 11:36:37,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 11:36:37,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:36:37,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:36:37,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 552 conjuncts are in the unsatisfiable core [2024-09-21 11:36:37,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:36:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 76960 backedges. 828 proven. 75900 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-21 11:36:38,447 INFO L327 TraceCheckSpWp]: Computing backward predicates...