./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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_9.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 c6e51ff8c9564e836040d6d35580386edd1169ec75010fdbf7c4eee4bc9fc430 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:31:45,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:31:46,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:31:46,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:31:46,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:31:46,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:31:46,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:31:46,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:31:46,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:31:46,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:31:46,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:31:46,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:31:46,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:31:46,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:31:46,086 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:31:46,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:31:46,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:31:46,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:31:46,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:31:46,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:31:46,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:31:46,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:31:46,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:31:46,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:31:46,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:31:46,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:31:46,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:31:46,091 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:31:46,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:31:46,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:31:46,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:31:46,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:31:46,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:31:46,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:31:46,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:31:46,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:31:46,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:31:46,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:31:46,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:31:46,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:31:46,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:31:46,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:31:46,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6e51ff8c9564e836040d6d35580386edd1169ec75010fdbf7c4eee4bc9fc430 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:31:46,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:31:46,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:31:46,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:31:46,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:31:46,338 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:31:46,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c [2024-09-11 19:31:47,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:31:47,824 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:31:47,825 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c [2024-09-11 19:31:47,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fc8d4ce99/fd86dabeef0345f0b0c0619b170c0c8c/FLAG01341617d [2024-09-11 19:31:47,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fc8d4ce99/fd86dabeef0345f0b0c0619b170c0c8c [2024-09-11 19:31:47,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:31:47,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:31:47,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:31:47,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:31:47,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:31:47,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:31:47" (1/1) ... [2024-09-11 19:31:47,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3398f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:47, skipping insertion in model container [2024-09-11 19:31:47,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:31:47" (1/1) ... [2024-09-11 19:31:47,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:31:47,993 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c[318,331] [2024-09-11 19:31:48,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:31:48,018 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:31:48,037 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c[318,331] [2024-09-11 19:31:48,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:31:48,054 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:31:48,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48 WrapperNode [2024-09-11 19:31:48,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:31:48,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:31:48,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:31:48,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:31:48,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,084 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-09-11 19:31:48,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:31:48,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:31:48,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:31:48,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:31:48,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,100 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]. [2024-09-11 19:31:48,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:31:48,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:31:48,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:31:48,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:31:48,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (1/1) ... [2024-09-11 19:31:48,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:31:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:48,140 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) [2024-09-11 19:31:48,154 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 [2024-09-11 19:31:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:31:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:31:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:31:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:31:48,239 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:31:48,240 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:31:48,323 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-11 19:31:48,324 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:31:48,346 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:31:48,346 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:31:48,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:31:48 BoogieIcfgContainer [2024-09-11 19:31:48,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:31:48,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:31:48,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:31:48,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:31:48,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:31:47" (1/3) ... [2024-09-11 19:31:48,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f456545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:31:48, skipping insertion in model container [2024-09-11 19:31:48,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:48" (2/3) ... [2024-09-11 19:31:48,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f456545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:31:48, skipping insertion in model container [2024-09-11 19:31:48,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:31:48" (3/3) ... [2024-09-11 19:31:48,354 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_9.c [2024-09-11 19:31:48,366 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:31:48,366 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:31:48,425 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:31:48,433 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;@343e3924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:31:48,433 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:31:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:31:48,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:48,441 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:31:48,442 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:48,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash 62462887, now seen corresponding path program 1 times [2024-09-11 19:31:48,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421279368] [2024-09-11 19:31:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421279368] [2024-09-11 19:31:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421279368] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:31:48,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:31:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:31:48,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250850687] [2024-09-11 19:31:48,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:31:48,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:31:48,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:31:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:31:48,618 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:48,631 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2024-09-11 19:31:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:31:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-11 19:31:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:48,638 INFO L225 Difference]: With dead ends: 15 [2024-09-11 19:31:48,638 INFO L226 Difference]: Without dead ends: 7 [2024-09-11 19:31:48,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:31:48,642 INFO L434 NwaCegarLoop]: 8 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, 8 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 [2024-09-11 19:31:48,643 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-09-11 19:31:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-09-11 19:31:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-09-11 19:31:48,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2024-09-11 19:31:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:48,663 INFO L474 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-09-11 19:31:48,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2024-09-11 19:31:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:31:48,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:48,664 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:31:48,665 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:31:48,665 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:48,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash 62164977, now seen corresponding path program 1 times [2024-09-11 19:31:48,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:48,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404327074] [2024-09-11 19:31:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404327074] [2024-09-11 19:31:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404327074] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:31:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:31:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:31:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730245109] [2024-09-11 19:31:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:31:48,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:31:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:31:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:31:48,727 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:48,742 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2024-09-11 19:31:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:31:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-11 19:31:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:48,744 INFO L225 Difference]: With dead ends: 15 [2024-09-11 19:31:48,744 INFO L226 Difference]: Without dead ends: 9 [2024-09-11 19:31:48,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:31:48,745 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:48,746 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-09-11 19:31:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-09-11 19:31:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-09-11 19:31:48,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2024-09-11 19:31:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:48,750 INFO L474 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-09-11 19:31:48,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:48,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-09-11 19:31:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:31:48,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:48,752 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:48,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:31:48,753 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:48,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash -338656492, now seen corresponding path program 1 times [2024-09-11 19:31:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18888744] [2024-09-11 19:31:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:48,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18888744] [2024-09-11 19:31:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18888744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504424199] [2024-09-11 19:31:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:48,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:48,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:48,818 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) [2024-09-11 19:31:48,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:31:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:48,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-11 19:31:48,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:48,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504424199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:48,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-11 19:31:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120433909] [2024-09-11 19:31:48,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:48,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:31:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:31:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:31:48,937 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:49,015 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2024-09-11 19:31:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:31:49,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-11 19:31:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:49,016 INFO L225 Difference]: With dead ends: 20 [2024-09-11 19:31:49,016 INFO L226 Difference]: Without dead ends: 14 [2024-09-11 19:31:49,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:31:49,017 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:49,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-09-11 19:31:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-09-11 19:31:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-09-11 19:31:49,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2024-09-11 19:31:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:49,020 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-09-11 19:31:49,021 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-09-11 19:31:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:31:49,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:49,021 INFO L216 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2024-09-11 19:31:49,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:31:49,222 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:49,223 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1494242689, now seen corresponding path program 1 times [2024-09-11 19:31:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405805933] [2024-09-11 19:31:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405805933] [2024-09-11 19:31:49,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405805933] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:49,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206215143] [2024-09-11 19:31:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:49,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:49,303 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) [2024-09-11 19:31:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:31:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:49,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:31:49,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:49,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206215143] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:49,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:49,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-11 19:31:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429909982] [2024-09-11 19:31:49,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:49,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:31:49,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:31:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:31:49,383 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:49,426 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-09-11 19:31:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:31:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-09-11 19:31:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:49,427 INFO L225 Difference]: With dead ends: 31 [2024-09-11 19:31:49,428 INFO L226 Difference]: Without dead ends: 22 [2024-09-11 19:31:49,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:31:49,429 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:49,429 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-11 19:31:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-11 19:31:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-11 19:31:49,433 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-09-11 19:31:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:49,434 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-11 19:31:49,434 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:49,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-11 19:31:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:31:49,435 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:49,435 INFO L216 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2024-09-11 19:31:49,447 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:49,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:49,640 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:49,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1567053427, now seen corresponding path program 2 times [2024-09-11 19:31:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:49,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494516395] [2024-09-11 19:31:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:49,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:49,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494516395] [2024-09-11 19:31:49,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494516395] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:49,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805056090] [2024-09-11 19:31:49,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:31:49,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:49,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:49,818 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) [2024-09-11 19:31:49,823 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:31:49,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:31:49,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:49,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:31:49,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:49,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:50,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805056090] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:50,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-09-11 19:31:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442297210] [2024-09-11 19:31:50,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:50,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:31:50,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:31:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:31:50,017 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:50,069 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-11 19:31:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 19:31:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-09-11 19:31:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:50,070 INFO L225 Difference]: With dead ends: 47 [2024-09-11 19:31:50,071 INFO L226 Difference]: Without dead ends: 38 [2024-09-11 19:31:50,071 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:31:50,072 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:50,072 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-11 19:31:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-11 19:31:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-09-11 19:31:50,079 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2024-09-11 19:31:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:50,079 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-09-11 19:31:50,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-09-11 19:31:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:31:50,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:50,081 INFO L216 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1] [2024-09-11 19:31:50,092 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:31:50,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:50,285 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:50,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 169405861, now seen corresponding path program 3 times [2024-09-11 19:31:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904272418] [2024-09-11 19:31:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:31:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904272418] [2024-09-11 19:31:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904272418] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223255055] [2024-09-11 19:31:50,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:31:50,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:50,567 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) [2024-09-11 19:31:50,570 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:31:50,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:31:50,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:50,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:31:50,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-11 19:31:50,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-11 19:31:50,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223255055] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:50,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:50,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 23 [2024-09-11 19:31:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886656319] [2024-09-11 19:31:50,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:50,702 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:31:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:31:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:31:50,703 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:50,756 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-09-11 19:31:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:31:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-09-11 19:31:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:50,759 INFO L225 Difference]: With dead ends: 57 [2024-09-11 19:31:50,759 INFO L226 Difference]: Without dead ends: 48 [2024-09-11 19:31:50,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:31:50,760 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:50,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-11 19:31:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-11 19:31:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-09-11 19:31:50,771 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 37 [2024-09-11 19:31:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:50,771 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-09-11 19:31:50,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:50,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-09-11 19:31:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:31:50,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:50,773 INFO L216 NwaCegarLoop]: trace histogram [21, 15, 6, 1, 1, 1, 1, 1] [2024-09-11 19:31:50,786 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:31:50,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:50,974 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:50,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash -569714980, now seen corresponding path program 4 times [2024-09-11 19:31:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370194280] [2024-09-11 19:31:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370194280] [2024-09-11 19:31:51,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370194280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464959155] [2024-09-11 19:31:51,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:31:51,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:51,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:51,239 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) [2024-09-11 19:31:51,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:31:51,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:31:51,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:51,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:31:51,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:51,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464959155] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:51,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-09-11 19:31:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188750340] [2024-09-11 19:31:51,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:51,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:31:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:31:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:31:51,718 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:51,798 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2024-09-11 19:31:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:31:51,798 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-09-11 19:31:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:51,799 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:31:51,799 INFO L226 Difference]: Without dead ends: 82 [2024-09-11 19:31:51,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:31:51,800 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:51,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-11 19:31:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-11 19:31:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-09-11 19:31:51,808 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 47 [2024-09-11 19:31:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:51,808 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-09-11 19:31:51,808 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:51,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-09-11 19:31:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-11 19:31:51,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:51,810 INFO L216 NwaCegarLoop]: trace histogram [38, 32, 6, 1, 1, 1, 1, 1] [2024-09-11 19:31:51,824 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:31:52,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 19:31:52,015 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2107285905, now seen corresponding path program 5 times [2024-09-11 19:31:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:52,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756512053] [2024-09-11 19:31:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756512053] [2024-09-11 19:31:52,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756512053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466833048] [2024-09-11 19:31:52,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:31:52,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:52,648 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) [2024-09-11 19:31:52,654 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:31:52,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2024-09-11 19:31:52,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:52,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:31:52,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:52,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:54,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466833048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:54,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:54,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2024-09-11 19:31:54,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776767999] [2024-09-11 19:31:54,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:54,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-11 19:31:54,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-11 19:31:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:31:54,007 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:54,175 INFO L93 Difference]: Finished difference Result 167 states and 213 transitions. [2024-09-11 19:31:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-11 19:31:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-09-11 19:31:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:54,176 INFO L225 Difference]: With dead ends: 167 [2024-09-11 19:31:54,176 INFO L226 Difference]: Without dead ends: 150 [2024-09-11 19:31:54,178 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:31:54,178 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:54,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-11 19:31:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-09-11 19:31:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0469798657718121) internal successors, (156), 149 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2024-09-11 19:31:54,196 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 81 [2024-09-11 19:31:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:54,197 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2024-09-11 19:31:54,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:54,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2024-09-11 19:31:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-11 19:31:54,202 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:54,202 INFO L216 NwaCegarLoop]: trace histogram [72, 66, 6, 1, 1, 1, 1, 1] [2024-09-11 19:31:54,216 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:54,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:54,406 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:54,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1750028459, now seen corresponding path program 6 times [2024-09-11 19:31:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:54,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7161094] [2024-09-11 19:31:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 737 proven. 4422 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 19:31:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7161094] [2024-09-11 19:31:56,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7161094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075765226] [2024-09-11 19:31:56,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:31:56,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:56,504 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) [2024-09-11 19:31:56,505 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:31:56,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-11 19:31:56,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:56,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:31:56,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 858 proven. 36 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2024-09-11 19:31:56,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 858 proven. 36 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2024-09-11 19:31:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075765226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 9, 9] total 83 [2024-09-11 19:31:57,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265813416] [2024-09-11 19:31:57,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:57,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-11 19:31:57,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-11 19:31:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2024-09-11 19:31:57,193 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand has 83 states, 83 states have (on average 2.072289156626506) internal successors, (172), 83 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:57,403 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-09-11 19:31:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-11 19:31:57,403 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.072289156626506) internal successors, (172), 83 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-09-11 19:31:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:57,405 INFO L225 Difference]: With dead ends: 185 [2024-09-11 19:31:57,405 INFO L226 Difference]: Without dead ends: 168 [2024-09-11 19:31:57,407 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2024-09-11 19:31:57,408 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:57,408 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-11 19:31:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-11 19:31:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.089820359281437) internal successors, (182), 167 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2024-09-11 19:31:57,423 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 149 [2024-09-11 19:31:57,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:57,423 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2024-09-11 19:31:57,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.072289156626506) internal successors, (172), 83 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:57,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2024-09-11 19:31:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-09-11 19:31:57,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:57,425 INFO L216 NwaCegarLoop]: trace histogram [81, 67, 14, 1, 1, 1, 1, 1] [2024-09-11 19:31:57,438 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:57,626 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:57,627 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:57,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2084740256, now seen corresponding path program 7 times [2024-09-11 19:31:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:57,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839552284] [2024-09-11 19:31:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 1836 proven. 4556 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:31:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839552284] [2024-09-11 19:31:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839552284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965215935] [2024-09-11 19:31:59,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:31:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:59,728 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) [2024-09-11 19:31:59,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:31:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:59,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-11 19:31:59,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 1836 proven. 4556 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:31:59,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:32:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 1836 proven. 4556 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:32:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965215935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:32:04,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:32:04,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 138 [2024-09-11 19:32:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400279868] [2024-09-11 19:32:04,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:32:04,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-09-11 19:32:04,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:32:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-09-11 19:32:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-09-11 19:32:04,140 INFO L87 Difference]: Start difference. First operand 168 states and 182 transitions. Second operand has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 138 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:32:04,470 INFO L93 Difference]: Finished difference Result 339 states and 436 transitions. [2024-09-11 19:32:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-09-11 19:32:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 138 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-09-11 19:32:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:32:04,472 INFO L225 Difference]: With dead ends: 339 [2024-09-11 19:32:04,472 INFO L226 Difference]: Without dead ends: 306 [2024-09-11 19:32:04,475 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-09-11 19:32:04,475 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:32:04,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:32:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-09-11 19:32:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-09-11 19:32:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.0491803278688525) internal successors, (320), 305 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 320 transitions. [2024-09-11 19:32:04,489 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 320 transitions. Word has length 167 [2024-09-11 19:32:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:32:04,489 INFO L474 AbstractCegarLoop]: Abstraction has 306 states and 320 transitions. [2024-09-11 19:32:04,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 138 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:04,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 320 transitions. [2024-09-11 19:32:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-09-11 19:32:04,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:32:04,492 INFO L216 NwaCegarLoop]: trace histogram [150, 136, 14, 1, 1, 1, 1, 1] [2024-09-11 19:32:04,505 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 19:32:04,696 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:32:04,697 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:32:04,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1227317711, now seen corresponding path program 8 times [2024-09-11 19:32:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:32:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604256605] [2024-09-11 19:32:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:32:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:32:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:32:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 3699 proven. 18632 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:32:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:32:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604256605] [2024-09-11 19:32:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604256605] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:32:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781588160] [2024-09-11 19:32:12,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:32:12,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:32:12,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:32:12,390 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) [2024-09-11 19:32:12,390 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:32:12,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:32:12,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:32:12,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-09-11 19:32:12,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:32:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 3699 proven. 18632 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:32:12,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:32:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 3699 proven. 18632 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:32:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781588160] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:32:28,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:32:28,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 276 [2024-09-11 19:32:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078507776] [2024-09-11 19:32:28,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:32:28,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-09-11 19:32:28,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:32:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-09-11 19:32:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-09-11 19:32:28,850 INFO L87 Difference]: Start difference. First operand 306 states and 320 transitions. Second operand has 277 states, 277 states have (on average 2.0180505415162453) internal successors, (559), 276 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:32:30,039 INFO L93 Difference]: Finished difference Result 615 states and 781 transitions. [2024-09-11 19:32:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-09-11 19:32:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 2.0180505415162453) internal successors, (559), 276 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2024-09-11 19:32:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:32:30,041 INFO L225 Difference]: With dead ends: 615 [2024-09-11 19:32:30,041 INFO L226 Difference]: Without dead ends: 582 [2024-09-11 19:32:30,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-09-11 19:32:30,045 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:32:30,045 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:32:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-09-11 19:32:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-09-11 19:32:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.0258175559380378) internal successors, (596), 581 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 596 transitions. [2024-09-11 19:32:30,065 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 596 transitions. Word has length 305 [2024-09-11 19:32:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:32:30,065 INFO L474 AbstractCegarLoop]: Abstraction has 582 states and 596 transitions. [2024-09-11 19:32:30,065 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 2.0180505415162453) internal successors, (559), 276 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:30,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 596 transitions. [2024-09-11 19:32:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-09-11 19:32:30,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:32:30,072 INFO L216 NwaCegarLoop]: trace histogram [288, 274, 14, 1, 1, 1, 1, 1] [2024-09-11 19:32:30,099 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 19:32:30,272 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:32:30,273 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:32:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 504512493, now seen corresponding path program 9 times [2024-09-11 19:32:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:32:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714051549] [2024-09-11 19:32:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:32:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:32:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:32:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 82944 backedges. 7425 proven. 75350 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 19:32:59,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:32:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714051549] [2024-09-11 19:32:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714051549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:32:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689553977] [2024-09-11 19:32:59,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:32:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:32:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:32:59,613 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) [2024-09-11 19:32:59,614 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:32:59,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-11 19:32:59,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:32:59,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:32:59,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 82944 backedges. 7946 proven. 196 refuted. 0 times theorem prover too weak. 74802 trivial. 0 not checked. [2024-09-11 19:33:02,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 82944 backedges. 7946 proven. 196 refuted. 0 times theorem prover too weak. 74802 trivial. 0 not checked. [2024-09-11 19:33:05,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689553977] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:05,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:05,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [276, 17, 17] total 307 [2024-09-11 19:33:05,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839451277] [2024-09-11 19:33:05,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:05,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 307 states [2024-09-11 19:33:05,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 307 interpolants. [2024-09-11 19:33:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46971, Invalid=46971, Unknown=0, NotChecked=0, Total=93942 [2024-09-11 19:33:05,254 INFO L87 Difference]: Start difference. First operand 582 states and 596 transitions. Second operand has 307 states, 307 states have (on average 2.019543973941368) internal successors, (620), 307 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:07,750 INFO L93 Difference]: Finished difference Result 649 states and 710 transitions. [2024-09-11 19:33:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-09-11 19:33:07,750 INFO L78 Accepts]: Start accepts. Automaton has has 307 states, 307 states have (on average 2.019543973941368) internal successors, (620), 307 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2024-09-11 19:33:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:07,753 INFO L225 Difference]: With dead ends: 649 [2024-09-11 19:33:07,754 INFO L226 Difference]: Without dead ends: 616 [2024-09-11 19:33:07,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=46971, Invalid=46971, Unknown=0, NotChecked=0, Total=93942 [2024-09-11 19:33:07,758 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:07,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:33:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-09-11 19:33:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-09-11 19:33:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.0504065040650405) internal successors, (646), 615 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 646 transitions. [2024-09-11 19:33:07,785 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 646 transitions. Word has length 581 [2024-09-11 19:33:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:07,785 INFO L474 AbstractCegarLoop]: Abstraction has 616 states and 646 transitions. [2024-09-11 19:33:07,786 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 307 states, 307 states have (on average 2.019543973941368) internal successors, (620), 307 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:07,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 646 transitions. [2024-09-11 19:33:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-09-11 19:33:07,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:07,793 INFO L216 NwaCegarLoop]: trace histogram [305, 275, 30, 1, 1, 1, 1, 1] [2024-09-11 19:33:07,805 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 19:33:07,993 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:33:07,993 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:07,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:07,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2018981024, now seen corresponding path program 10 times [2024-09-11 19:33:07,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:07,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492609709] [2024-09-11 19:33:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 93025 backedges. 16284 proven. 75900 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2024-09-11 19:33:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492609709] [2024-09-11 19:33:39,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492609709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139515308] [2024-09-11 19:33:39,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:33:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:39,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:39,347 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) [2024-09-11 19:33:39,348 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:33:39,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:33:39,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:33:39,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-11 19:33:39,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 93025 backedges. 16284 proven. 75900 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2024-09-11 19:33:40,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 93025 backedges. 16284 proven. 75900 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2024-09-11 19:34:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139515308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:50,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:50,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 277, 277] total 554 [2024-09-11 19:34:50,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433829002] [2024-09-11 19:34:50,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:50,324 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 555 states [2024-09-11 19:34:50,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 555 interpolants. [2024-09-11 19:34:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2024-09-11 19:34:50,349 INFO L87 Difference]: Start difference. First operand 616 states and 646 transitions. Second operand has 555 states, 555 states have (on average 2.009009009009009) internal successors, (1115), 554 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:34:58,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:58,238 INFO L93 Difference]: Finished difference Result 1235 states and 1572 transitions. [2024-09-11 19:34:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 554 states. [2024-09-11 19:34:58,239 INFO L78 Accepts]: Start accepts. Automaton has has 555 states, 555 states have (on average 2.009009009009009) internal successors, (1115), 554 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 615 [2024-09-11 19:34:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:58,243 INFO L225 Difference]: With dead ends: 1235 [2024-09-11 19:34:58,243 INFO L226 Difference]: Without dead ends: 1170 [2024-09-11 19:34:58,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1505 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 90.8s TimeCoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2024-09-11 19:34:58,254 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:58,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 19:34:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2024-09-11 19:34:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2024-09-11 19:34:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.0265183917878529) internal successors, (1200), 1169 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:34:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1200 transitions. [2024-09-11 19:34:58,288 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1200 transitions. Word has length 615 [2024-09-11 19:34:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:58,289 INFO L474 AbstractCegarLoop]: Abstraction has 1170 states and 1200 transitions. [2024-09-11 19:34:58,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 555 states, 555 states have (on average 2.009009009009009) internal successors, (1115), 554 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:34:58,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1200 transitions. [2024-09-11 19:34:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2024-09-11 19:34:58,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:58,297 INFO L216 NwaCegarLoop]: trace histogram [582, 552, 30, 1, 1, 1, 1, 1] [2024-09-11 19:34:58,310 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 19:34:58,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:58,501 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:58,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1285831423, now seen corresponding path program 11 times [2024-09-11 19:34:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704164522] [2024-09-11 19:34:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:58,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat