./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de51.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/in-de51.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 6b650e50691cb35e1bdf008faa87d25716bf83c58902e8bffb444ab81952ff19 --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 19:27:07,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:27:07,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:27:07,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:27:07,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:27:07,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:27:07,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:27:07,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:27:07,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:27:07,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:27:07,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:27:07,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:27:07,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:27:07,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:27:07,281 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:27:07,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:27:07,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:27:07,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:27:07,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:27:07,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:27:07,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:27:07,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:27:07,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:27:07,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:27:07,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:27:07,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:27:07,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:27:07,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:27:07,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:27:07,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:27:07,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:27:07,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:27:07,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:27:07,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:27:07,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:27:07,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:27:07,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:27:07,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:27:07,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:27:07,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:27:07,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:27:07,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:27:07,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b650e50691cb35e1bdf008faa87d25716bf83c58902e8bffb444ab81952ff19 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:27:07,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:27:07,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:27:07,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:27:07,502 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:27:07,502 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:27:07,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/in-de51.c [2024-09-11 19:27:08,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:27:08,943 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:27:08,943 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/in-de51.c [2024-09-11 19:27:08,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/546097b07/4fefd80e7ec94f9e8d684d40a1a4d66c/FLAG2418efc64 [2024-09-11 19:27:09,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/546097b07/4fefd80e7ec94f9e8d684d40a1a4d66c [2024-09-11 19:27:09,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:27:09,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:27:09,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:27:09,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:27:09,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:27:09,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742a8a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09, skipping insertion in model container [2024-09-11 19:27:09,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:27:09,544 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/in-de51.c[368,381] [2024-09-11 19:27:09,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:27:09,575 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:27:09,587 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/in-de51.c[368,381] [2024-09-11 19:27:09,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:27:09,613 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:27:09,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09 WrapperNode [2024-09-11 19:27:09,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:27:09,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:27:09,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:27:09,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:27:09,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,641 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-09-11 19:27:09,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:27:09,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:27:09,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:27:09,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:27:09,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,660 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 19:27:09,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:27:09,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:27:09,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:27:09,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:27:09,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (1/1) ... [2024-09-11 19:27:09,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:27:09,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:09,706 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 19:27:09,709 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 19:27:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:27:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:27:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:27:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:27:09,786 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:27:09,788 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:27:09,872 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 19:27:09,873 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:27:09,899 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:27:09,899 INFO L318 CfgBuilder]: Removed 5 assume(true) statements. [2024-09-11 19:27:09,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:27:09 BoogieIcfgContainer [2024-09-11 19:27:09,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:27:09,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:27:09,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:27:09,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:27:09,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:27:09" (1/3) ... [2024-09-11 19:27:09,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b835d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:27:09, skipping insertion in model container [2024-09-11 19:27:09,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:09" (2/3) ... [2024-09-11 19:27:09,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b835d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:27:09, skipping insertion in model container [2024-09-11 19:27:09,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:27:09" (3/3) ... [2024-09-11 19:27:09,911 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de51.c [2024-09-11 19:27:09,924 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:27:09,924 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:27:09,980 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:27:09,986 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;@569e4cb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:27:09,986 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:27:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 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 19:27:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:27:09,993 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:09,994 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:09,994 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:09,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash 577542875, now seen corresponding path program 1 times [2024-09-11 19:27:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885252233] [2024-09-11 19:27:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885252233] [2024-09-11 19:27:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885252233] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:10,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:10,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:27:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220387691] [2024-09-11 19:27:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:27:10,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:27:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:27:10,172 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 19:27:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,191 INFO L93 Difference]: Finished difference Result 24 states and 42 transitions. [2024-09-11 19:27:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:27:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2024-09-11 19:27:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,198 INFO L225 Difference]: With dead ends: 24 [2024-09-11 19:27:10,198 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:27:10,200 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 19:27:10,202 INFO L434 NwaCegarLoop]: 15 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, 15 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 19:27:10,203 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:27:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:27:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 19:27:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2024-09-11 19:27:10,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 10 [2024-09-11 19:27:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,224 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2024-09-11 19:27:10,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 19:27:10,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2024-09-11 19:27:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:27:10,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,225 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:27:10,225 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 573848791, now seen corresponding path program 1 times [2024-09-11 19:27:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130375350] [2024-09-11 19:27:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,458 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 19:27:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130375350] [2024-09-11 19:27:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130375350] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893342896] [2024-09-11 19:27:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:10,462 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 19:27:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,486 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2024-09-11 19:27:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:10,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) Word has length 10 [2024-09-11 19:27:10,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,487 INFO L225 Difference]: With dead ends: 21 [2024-09-11 19:27:10,487 INFO L226 Difference]: Without dead ends: 17 [2024-09-11 19:27:10,488 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:10,489 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,489 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-11 19:27:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-11 19:27:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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 19:27:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2024-09-11 19:27:10,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 10 [2024-09-11 19:27:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,494 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2024-09-11 19:27:10,494 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 19:27:10,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2024-09-11 19:27:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:10,495 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,495 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:27:10,495 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 611108754, now seen corresponding path program 1 times [2024-09-11 19:27:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572601252] [2024-09-11 19:27:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572601252] [2024-09-11 19:27:10,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572601252] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:10,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495406011] [2024-09-11 19:27:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,539 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:27:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:27:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:27:10,540 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,561 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2024-09-11 19:27:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:27:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-09-11 19:27:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,563 INFO L225 Difference]: With dead ends: 28 [2024-09-11 19:27:10,563 INFO L226 Difference]: Without dead ends: 22 [2024-09-11 19:27:10,564 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 19:27:10,564 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-11 19:27:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-11 19:27:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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 19:27:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2024-09-11 19:27:10,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 11 [2024-09-11 19:27:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,577 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2024-09-11 19:27:10,578 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2024-09-11 19:27:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:10,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,580 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:27:10,580 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 656361283, now seen corresponding path program 1 times [2024-09-11 19:27:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116094189] [2024-09-11 19:27:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116094189] [2024-09-11 19:27:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116094189] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:10,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080047596] [2024-09-11 19:27:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,612 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:27:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:27:10,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:27:10,613 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,636 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2024-09-11 19:27:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:27:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-09-11 19:27:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,637 INFO L225 Difference]: With dead ends: 37 [2024-09-11 19:27:10,638 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 19:27:10,638 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 19:27:10,639 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 19:27:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-09-11 19:27:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 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 19:27:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2024-09-11 19:27:10,650 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 11 [2024-09-11 19:27:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,651 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2024-09-11 19:27:10,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2024-09-11 19:27:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:10,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,652 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,652 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 19:27:10,653 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1697770205, now seen corresponding path program 1 times [2024-09-11 19:27:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271312086] [2024-09-11 19:27:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271312086] [2024-09-11 19:27:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271312086] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412889676] [2024-09-11 19:27:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,700 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:10,701 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,735 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2024-09-11 19:27:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-09-11 19:27:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,736 INFO L225 Difference]: With dead ends: 37 [2024-09-11 19:27:10,736 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 19:27:10,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:10,737 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 19:27:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-09-11 19:27:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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 19:27:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2024-09-11 19:27:10,742 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 29 transitions. Word has length 11 [2024-09-11 19:27:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,743 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 29 transitions. [2024-09-11 19:27:10,743 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 19:27:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2024-09-11 19:27:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:10,744 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,744 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,744 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-11 19:27:10,744 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1658571140, now seen corresponding path program 1 times [2024-09-11 19:27:10,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733407666] [2024-09-11 19:27:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,828 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 19:27:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733407666] [2024-09-11 19:27:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733407666] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312031312] [2024-09-11 19:27:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:10,835 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 19:27:10,839 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 19:27:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:27:10,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:10,911 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 19:27:10,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:10,955 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 19:27:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312031312] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:10,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:10,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-11 19:27:10,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574836106] [2024-09-11 19:27:10,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,959 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:27:10,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:27:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:27:10,960 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 19:27:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:11,070 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2024-09-11 19:27:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:27:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 11 [2024-09-11 19:27:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:11,072 INFO L225 Difference]: With dead ends: 83 [2024-09-11 19:27:11,072 INFO L226 Difference]: Without dead ends: 70 [2024-09-11 19:27:11,073 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:27:11,073 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:11,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 65 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-11 19:27:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 32. [2024-09-11 19:27:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 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 19:27:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-09-11 19:27:11,086 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 11 [2024-09-11 19:27:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:11,086 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-09-11 19:27:11,086 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 19:27:11,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-09-11 19:27:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:27:11,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:11,087 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:11,101 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:11,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:27:11,289 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:11,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash -900397997, now seen corresponding path program 1 times [2024-09-11 19:27:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250271415] [2024-09-11 19:27:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250271415] [2024-09-11 19:27:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250271415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386191132] [2024-09-11 19:27:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:11,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:11,374 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 19:27:11,379 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 19:27:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:11,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:27:11,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:11,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386191132] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:11,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:11,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-09-11 19:27:11,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956842228] [2024-09-11 19:27:11,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:11,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:27:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:27:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:27:11,482 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 19:27:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:11,756 INFO L93 Difference]: Finished difference Result 100 states and 144 transitions. [2024-09-11 19:27:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:27:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 19:27:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:11,757 INFO L225 Difference]: With dead ends: 100 [2024-09-11 19:27:11,757 INFO L226 Difference]: Without dead ends: 91 [2024-09-11 19:27:11,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:27:11,758 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 90 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:11,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 80 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-11 19:27:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 39. [2024-09-11 19:27:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 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 19:27:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2024-09-11 19:27:11,768 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 13 [2024-09-11 19:27:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:11,768 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2024-09-11 19:27:11,768 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 19:27:11,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2024-09-11 19:27:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:27:11,769 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:11,769 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:11,783 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:27:11,969 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 19:27:11,970 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:11,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2140868714, now seen corresponding path program 1 times [2024-09-11 19:27:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504165149] [2024-09-11 19:27:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:11,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:27:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504165149] [2024-09-11 19:27:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504165149] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797809521] [2024-09-11 19:27:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:12,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:12,030 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 19:27:12,031 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 19:27:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:12,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:27:12,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:27:12,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:27:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797809521] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:12,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-09-11 19:27:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429710812] [2024-09-11 19:27:12,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:12,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:12,142 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:27:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:12,186 INFO L93 Difference]: Finished difference Result 65 states and 96 transitions. [2024-09-11 19:27:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 14 [2024-09-11 19:27:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:12,187 INFO L225 Difference]: With dead ends: 65 [2024-09-11 19:27:12,187 INFO L226 Difference]: Without dead ends: 57 [2024-09-11 19:27:12,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:12,188 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:12,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-11 19:27:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-09-11 19:27:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 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 19:27:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2024-09-11 19:27:12,204 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 14 [2024-09-11 19:27:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:12,204 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2024-09-11 19:27:12,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:27:12,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2024-09-11 19:27:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:27:12,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:12,205 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:12,221 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 19:27:12,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-11 19:27:12,407 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:12,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash -704085993, now seen corresponding path program 2 times [2024-09-11 19:27:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:12,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259348596] [2024-09-11 19:27:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259348596] [2024-09-11 19:27:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259348596] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786396949] [2024-09-11 19:27:12,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:12,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:12,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:12,491 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 19:27:12,502 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 19:27:12,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:12,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:12,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:27:12,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:12,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786396949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:12,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:12,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-11 19:27:12,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462254666] [2024-09-11 19:27:12,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:12,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:27:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:27:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:12,645 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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 19:27:13,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:13,208 INFO L93 Difference]: Finished difference Result 251 states and 372 transitions. [2024-09-11 19:27:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:27:13,209 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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) Word has length 14 [2024-09-11 19:27:13,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:13,211 INFO L225 Difference]: With dead ends: 251 [2024-09-11 19:27:13,211 INFO L226 Difference]: Without dead ends: 228 [2024-09-11 19:27:13,211 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:13,213 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 381 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:13,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 279 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-09-11 19:27:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 76. [2024-09-11 19:27:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 75 states have internal predecessors, (109), 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 19:27:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2024-09-11 19:27:13,255 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 14 [2024-09-11 19:27:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:13,255 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2024-09-11 19:27:13,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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 19:27:13,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2024-09-11 19:27:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:27:13,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:13,256 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:13,270 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:13,457 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,457 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:13,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -537926878, now seen corresponding path program 1 times [2024-09-11 19:27:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127908997] [2024-09-11 19:27:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127908997] [2024-09-11 19:27:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127908997] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372603596] [2024-09-11 19:27:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:13,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:13,643 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 19:27:13,644 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 19:27:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:13,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:27:13,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:13,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372603596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:13,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-09-11 19:27:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349981778] [2024-09-11 19:27:13,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:13,816 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:13,817 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 19:27:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:13,879 INFO L93 Difference]: Finished difference Result 88 states and 122 transitions. [2024-09-11 19:27:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:27:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 15 [2024-09-11 19:27:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:13,880 INFO L225 Difference]: With dead ends: 88 [2024-09-11 19:27:13,880 INFO L226 Difference]: Without dead ends: 70 [2024-09-11 19:27:13,881 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:13,881 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:13,881 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-11 19:27:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-09-11 19:27:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 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 19:27:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2024-09-11 19:27:13,900 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 15 [2024-09-11 19:27:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:13,900 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2024-09-11 19:27:13,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 19:27:13,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,900 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2024-09-11 19:27:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:27:13,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:13,901 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:13,915 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 19:27:14,105 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-11 19:27:14,106 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:14,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash 538579383, now seen corresponding path program 1 times [2024-09-11 19:27:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249506585] [2024-09-11 19:27:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249506585] [2024-09-11 19:27:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249506585] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102874805] [2024-09-11 19:27:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:14,186 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 19:27:14,188 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 19:27:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:14,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:14,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102874805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:14,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-09-11 19:27:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417092667] [2024-09-11 19:27:14,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:14,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:27:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:27:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:27:14,307 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 19:27:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:14,431 INFO L93 Difference]: Finished difference Result 124 states and 168 transitions. [2024-09-11 19:27:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:27:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 16 [2024-09-11 19:27:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:14,432 INFO L225 Difference]: With dead ends: 124 [2024-09-11 19:27:14,432 INFO L226 Difference]: Without dead ends: 105 [2024-09-11 19:27:14,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:27:14,433 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 71 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:14,433 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 96 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-11 19:27:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2024-09-11 19:27:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.459016393442623) internal successors, (89), 61 states have internal predecessors, (89), 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 19:27:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2024-09-11 19:27:14,449 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 16 [2024-09-11 19:27:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:14,450 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2024-09-11 19:27:14,450 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 19:27:14,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2024-09-11 19:27:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:27:14,451 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:14,451 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:14,463 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 19:27:14,651 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:27:14,651 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:14,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash -724514985, now seen corresponding path program 2 times [2024-09-11 19:27:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:14,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501715849] [2024-09-11 19:27:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501715849] [2024-09-11 19:27:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501715849] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894090024] [2024-09-11 19:27:14,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:14,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:14,740 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 19:27:14,747 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 19:27:14,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:14,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:14,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:14,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:14,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894090024] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:14,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2024-09-11 19:27:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378810022] [2024-09-11 19:27:14,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:14,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:27:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:27:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:27:14,982 INFO L87 Difference]: Start difference. First operand 62 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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 19:27:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:15,781 INFO L93 Difference]: Finished difference Result 133 states and 195 transitions. [2024-09-11 19:27:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:27:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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 16 [2024-09-11 19:27:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:15,783 INFO L225 Difference]: With dead ends: 133 [2024-09-11 19:27:15,783 INFO L226 Difference]: Without dead ends: 114 [2024-09-11 19:27:15,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=1565, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:27:15,784 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:15,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 118 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-11 19:27:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2024-09-11 19:27:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 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 19:27:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2024-09-11 19:27:15,806 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 16 [2024-09-11 19:27:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:15,806 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2024-09-11 19:27:15,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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 19:27:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2024-09-11 19:27:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:27:15,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:15,807 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:15,821 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:27:16,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:16,008 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:16,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -420905289, now seen corresponding path program 2 times [2024-09-11 19:27:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906275765] [2024-09-11 19:27:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906275765] [2024-09-11 19:27:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906275765] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:16,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270914333] [2024-09-11 19:27:16,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:16,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:16,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:16,082 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 19:27:16,084 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 19:27:16,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:16,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:16,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:16,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:16,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270914333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:16,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:16,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-09-11 19:27:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874567533] [2024-09-11 19:27:16,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:16,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:27:16,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:27:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:16,173 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 19:27:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:16,262 INFO L93 Difference]: Finished difference Result 110 states and 159 transitions. [2024-09-11 19:27:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:27:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 18 [2024-09-11 19:27:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:16,263 INFO L225 Difference]: With dead ends: 110 [2024-09-11 19:27:16,263 INFO L226 Difference]: Without dead ends: 101 [2024-09-11 19:27:16,264 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:16,264 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:16,264 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-11 19:27:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-09-11 19:27:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 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 19:27:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2024-09-11 19:27:16,326 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 18 [2024-09-11 19:27:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:16,326 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2024-09-11 19:27:16,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 19:27:16,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2024-09-11 19:27:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:27:16,328 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:16,328 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:16,346 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 19:27:16,531 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:16,532 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:16,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1148094125, now seen corresponding path program 3 times [2024-09-11 19:27:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589146676] [2024-09-11 19:27:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589146676] [2024-09-11 19:27:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589146676] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471049073] [2024-09-11 19:27:16,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:16,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:16,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:16,663 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 19:27:16,670 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 19:27:16,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:27:16,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:16,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:16,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:16,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471049073] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:16,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-09-11 19:27:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947848152] [2024-09-11 19:27:16,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:16,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:27:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:27:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:16,849 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 19:27:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:17,770 INFO L93 Difference]: Finished difference Result 182 states and 258 transitions. [2024-09-11 19:27:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-11 19:27:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 19 [2024-09-11 19:27:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:17,771 INFO L225 Difference]: With dead ends: 182 [2024-09-11 19:27:17,771 INFO L226 Difference]: Without dead ends: 163 [2024-09-11 19:27:17,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=3017, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:27:17,773 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:17,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-11 19:27:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2024-09-11 19:27:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 states have internal predecessors, (144), 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 19:27:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2024-09-11 19:27:17,799 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 19 [2024-09-11 19:27:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:17,800 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2024-09-11 19:27:17,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 19:27:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2024-09-11 19:27:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:27:17,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:17,801 INFO L216 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:17,814 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-11 19:27:18,005 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:27:18,006 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:18,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 847488994, now seen corresponding path program 2 times [2024-09-11 19:27:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612120209] [2024-09-11 19:27:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612120209] [2024-09-11 19:27:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612120209] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859446719] [2024-09-11 19:27:18,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:18,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:18,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:18,095 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 19:27:18,099 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 19:27:18,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:18,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:18,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:27:18,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:18,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:18,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859446719] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:18,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:18,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-11 19:27:18,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935490243] [2024-09-11 19:27:18,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:18,262 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:27:18,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:27:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:27:18,263 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 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 19:27:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:19,711 INFO L93 Difference]: Finished difference Result 395 states and 551 transitions. [2024-09-11 19:27:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-11 19:27:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 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 19 [2024-09-11 19:27:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:19,713 INFO L225 Difference]: With dead ends: 395 [2024-09-11 19:27:19,713 INFO L226 Difference]: Without dead ends: 359 [2024-09-11 19:27:19,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:27:19,715 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 454 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:19,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 406 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-09-11 19:27:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 124. [2024-09-11 19:27:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3902439024390243) internal successors, (171), 123 states have internal predecessors, (171), 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 19:27:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 171 transitions. [2024-09-11 19:27:19,771 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 171 transitions. Word has length 19 [2024-09-11 19:27:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:19,771 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 171 transitions. [2024-09-11 19:27:19,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 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 19:27:19,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 171 transitions. [2024-09-11 19:27:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:19,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:19,772 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:19,784 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 19:27:19,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:27:19,973 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1139243939, now seen corresponding path program 3 times [2024-09-11 19:27:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673011559] [2024-09-11 19:27:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:27:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673011559] [2024-09-11 19:27:20,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673011559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275472717] [2024-09-11 19:27:20,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:20,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:20,045 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 19:27:20,048 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 19:27:20,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:27:20,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:20,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:27:20,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:27:20,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:27:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275472717] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:20,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:20,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 9] total 21 [2024-09-11 19:27:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386591931] [2024-09-11 19:27:20,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:20,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:27:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:27:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:27:20,568 INFO L87 Difference]: Start difference. First operand 124 states and 171 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 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 19:27:20,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:20,938 INFO L93 Difference]: Finished difference Result 221 states and 319 transitions. [2024-09-11 19:27:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 19:27:20,938 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 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 19:27:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:20,939 INFO L225 Difference]: With dead ends: 221 [2024-09-11 19:27:20,939 INFO L226 Difference]: Without dead ends: 196 [2024-09-11 19:27:20,940 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:27:20,940 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:20,940 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 163 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-09-11 19:27:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 163. [2024-09-11 19:27:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.4691358024691359) internal successors, (238), 162 states have internal predecessors, (238), 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 19:27:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2024-09-11 19:27:21,000 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 21 [2024-09-11 19:27:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:21,001 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2024-09-11 19:27:21,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 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 19:27:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2024-09-11 19:27:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:21,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:21,002 INFO L216 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:21,014 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:21,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 19:27:21,206 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:21,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash -753897116, now seen corresponding path program 3 times [2024-09-11 19:27:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:21,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711595914] [2024-09-11 19:27:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711595914] [2024-09-11 19:27:21,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711595914] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305424805] [2024-09-11 19:27:21,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:21,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:21,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:21,399 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:21,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 19:27:21,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:27:21,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:21,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-11 19:27:21,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:21,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305424805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:21,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2024-09-11 19:27:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515100944] [2024-09-11 19:27:21,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:21,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:27:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:27:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:27:21,718 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 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 19:27:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:25,220 INFO L93 Difference]: Finished difference Result 942 states and 1447 transitions. [2024-09-11 19:27:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-11 19:27:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 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 19:27:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:25,225 INFO L225 Difference]: With dead ends: 942 [2024-09-11 19:27:25,225 INFO L226 Difference]: Without dead ends: 907 [2024-09-11 19:27:25,226 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1575, Invalid=3537, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:27:25,226 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 1595 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:25,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1267 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 19:27:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-09-11 19:27:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 240. [2024-09-11 19:27:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.4476987447698744) internal successors, (346), 239 states have internal predecessors, (346), 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 19:27:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 346 transitions. [2024-09-11 19:27:25,346 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 346 transitions. Word has length 21 [2024-09-11 19:27:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:25,346 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 346 transitions. [2024-09-11 19:27:25,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 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 19:27:25,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 346 transitions. [2024-09-11 19:27:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:27:25,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:25,347 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:25,360 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:25,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 19:27:25,551 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:25,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1860393865, now seen corresponding path program 2 times [2024-09-11 19:27:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410350998] [2024-09-11 19:27:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:27:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410350998] [2024-09-11 19:27:25,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410350998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130767134] [2024-09-11 19:27:25,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:25,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:25,650 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:25,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 19:27:25,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:25,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:25,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:25,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:27:25,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:27:25,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130767134] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:25,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-09-11 19:27:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996783324] [2024-09-11 19:27:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:25,835 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:27:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:27:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:25,836 INFO L87 Difference]: Start difference. First operand 240 states and 346 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 19:27:26,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:26,780 INFO L93 Difference]: Finished difference Result 396 states and 558 transitions. [2024-09-11 19:27:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-11 19:27:26,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 22 [2024-09-11 19:27:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:26,782 INFO L225 Difference]: With dead ends: 396 [2024-09-11 19:27:26,782 INFO L226 Difference]: Without dead ends: 374 [2024-09-11 19:27:26,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=276, Invalid=2174, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:27:26,784 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 154 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:26,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 305 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-09-11 19:27:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 244. [2024-09-11 19:27:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.4362139917695473) internal successors, (349), 243 states have internal predecessors, (349), 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 19:27:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 349 transitions. [2024-09-11 19:27:26,893 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 349 transitions. Word has length 22 [2024-09-11 19:27:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:26,894 INFO L474 AbstractCegarLoop]: Abstraction has 244 states and 349 transitions. [2024-09-11 19:27:26,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 19:27:26,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 349 transitions. [2024-09-11 19:27:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:27:26,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:26,895 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:26,907 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:27,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:27:27,095 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:27,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1686131159, now seen corresponding path program 4 times [2024-09-11 19:27:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:27,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373799187] [2024-09-11 19:27:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:27,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:27,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:27,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373799187] [2024-09-11 19:27:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373799187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:27,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901733746] [2024-09-11 19:27:27,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:27,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:27,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:27,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:27,237 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-11 19:27:27,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:27,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:27,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:27:27,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:27,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901733746] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:27,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:27,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2024-09-11 19:27:27,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055667067] [2024-09-11 19:27:27,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:27,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:27:27,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:27:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:27:27,462 INFO L87 Difference]: Start difference. First operand 244 states and 349 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 19:27:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:29,353 INFO L93 Difference]: Finished difference Result 365 states and 524 transitions. [2024-09-11 19:27:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-11 19:27:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 22 [2024-09-11 19:27:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:29,355 INFO L225 Difference]: With dead ends: 365 [2024-09-11 19:27:29,355 INFO L226 Difference]: Without dead ends: 340 [2024-09-11 19:27:29,356 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=750, Invalid=6906, Unknown=0, NotChecked=0, Total=7656 [2024-09-11 19:27:29,357 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 191 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:29,357 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 189 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:27:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-09-11 19:27:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 250. [2024-09-11 19:27:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.4096385542168675) internal successors, (351), 249 states have internal predecessors, (351), 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 19:27:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 351 transitions. [2024-09-11 19:27:29,460 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 351 transitions. Word has length 22 [2024-09-11 19:27:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:29,460 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 351 transitions. [2024-09-11 19:27:29,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 19:27:29,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 351 transitions. [2024-09-11 19:27:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:27:29,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:29,461 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:29,476 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-11 19:27:29,661 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:29,662 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:29,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash 752963510, now seen corresponding path program 4 times [2024-09-11 19:27:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239053204] [2024-09-11 19:27:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:29,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239053204] [2024-09-11 19:27:29,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239053204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:29,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923816883] [2024-09-11 19:27:29,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:29,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:29,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:29,754 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:29,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-11 19:27:29,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:29,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:29,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:27:29,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:27:29,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:27:29,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923816883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:29,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:29,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-09-11 19:27:29,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006671128] [2024-09-11 19:27:29,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:29,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:27:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:27:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:29,903 INFO L87 Difference]: Start difference. First operand 250 states and 351 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 19:27:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:30,213 INFO L93 Difference]: Finished difference Result 365 states and 530 transitions. [2024-09-11 19:27:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:27:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 24 [2024-09-11 19:27:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:30,215 INFO L225 Difference]: With dead ends: 365 [2024-09-11 19:27:30,215 INFO L226 Difference]: Without dead ends: 347 [2024-09-11 19:27:30,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:27:30,215 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 72 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:30,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 71 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-11 19:27:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 289. [2024-09-11 19:27:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 288 states have internal predecessors, (409), 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 19:27:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 409 transitions. [2024-09-11 19:27:30,372 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 409 transitions. Word has length 24 [2024-09-11 19:27:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:30,373 INFO L474 AbstractCegarLoop]: Abstraction has 289 states and 409 transitions. [2024-09-11 19:27:30,373 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 19:27:30,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 409 transitions. [2024-09-11 19:27:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 19:27:30,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:30,374 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:30,389 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:30,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:30,577 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:30,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1367058242, now seen corresponding path program 5 times [2024-09-11 19:27:30,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:30,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095758425] [2024-09-11 19:27:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:30,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095758425] [2024-09-11 19:27:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095758425] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441299166] [2024-09-11 19:27:30,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:30,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:30,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:30,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:30,958 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-11 19:27:31,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:27:31,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:31,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-11 19:27:31,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:31,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441299166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:31,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2024-09-11 19:27:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575622839] [2024-09-11 19:27:31,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:31,161 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:27:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:27:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:27:31,162 INFO L87 Difference]: Start difference. First operand 289 states and 409 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 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 19:27:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:31,438 INFO L93 Difference]: Finished difference Result 297 states and 416 transitions. [2024-09-11 19:27:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:27:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 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 25 [2024-09-11 19:27:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:31,440 INFO L225 Difference]: With dead ends: 297 [2024-09-11 19:27:31,441 INFO L226 Difference]: Without dead ends: 276 [2024-09-11 19:27:31,441 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:27:31,442 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:31,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-09-11 19:27:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-09-11 19:27:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.4363636363636363) internal successors, (395), 275 states have internal predecessors, (395), 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 19:27:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 395 transitions. [2024-09-11 19:27:31,593 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 395 transitions. Word has length 25 [2024-09-11 19:27:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:31,593 INFO L474 AbstractCegarLoop]: Abstraction has 276 states and 395 transitions. [2024-09-11 19:27:31,594 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 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 19:27:31,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 395 transitions. [2024-09-11 19:27:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:31,594 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:31,594 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:31,607 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-11 19:27:31,795 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:31,795 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:31,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1894163173, now seen corresponding path program 5 times [2024-09-11 19:27:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832051131] [2024-09-11 19:27:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832051131] [2024-09-11 19:27:31,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832051131] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891581988] [2024-09-11 19:27:31,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:31,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:31,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:31,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:32,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-11 19:27:32,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:27:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:32,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:27:32,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:32,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891581988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:32,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:32,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 32 [2024-09-11 19:27:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640834904] [2024-09-11 19:27:32,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:32,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:27:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:27:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:32,424 INFO L87 Difference]: Start difference. First operand 276 states and 395 transitions. Second operand has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 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 19:27:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:34,713 INFO L93 Difference]: Finished difference Result 741 states and 984 transitions. [2024-09-11 19:27:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-09-11 19:27:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 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 26 [2024-09-11 19:27:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:34,718 INFO L225 Difference]: With dead ends: 741 [2024-09-11 19:27:34,719 INFO L226 Difference]: Without dead ends: 698 [2024-09-11 19:27:34,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3183 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1677, Invalid=9035, Unknown=0, NotChecked=0, Total=10712 [2024-09-11 19:27:34,721 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 367 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:34,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 464 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:27:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-09-11 19:27:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 315. [2024-09-11 19:27:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4426751592356688) internal successors, (453), 314 states have internal predecessors, (453), 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 19:27:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2024-09-11 19:27:34,893 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 26 [2024-09-11 19:27:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:34,894 INFO L474 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2024-09-11 19:27:34,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 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 19:27:34,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2024-09-11 19:27:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:34,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:34,895 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:34,906 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-11 19:27:35,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:35,095 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:35,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1244412201, now seen corresponding path program 3 times [2024-09-11 19:27:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573497739] [2024-09-11 19:27:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:27:35,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573497739] [2024-09-11 19:27:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573497739] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442767059] [2024-09-11 19:27:35,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:35,200 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:35,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-11 19:27:35,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:27:35,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:35,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:27:35,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:27:35,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:27:35,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442767059] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:35,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:35,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2024-09-11 19:27:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116497800] [2024-09-11 19:27:35,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:35,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:27:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:27:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:27:35,406 INFO L87 Difference]: Start difference. First operand 315 states and 453 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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 19:27:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:36,254 INFO L93 Difference]: Finished difference Result 520 states and 686 transitions. [2024-09-11 19:27:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-11 19:27:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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 26 [2024-09-11 19:27:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:36,256 INFO L225 Difference]: With dead ends: 520 [2024-09-11 19:27:36,256 INFO L226 Difference]: Without dead ends: 457 [2024-09-11 19:27:36,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:27:36,257 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 101 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:36,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 540 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-09-11 19:27:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 298. [2024-09-11 19:27:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4175084175084176) internal successors, (421), 297 states have internal predecessors, (421), 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 19:27:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 421 transitions. [2024-09-11 19:27:36,427 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 421 transitions. Word has length 26 [2024-09-11 19:27:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:36,427 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 421 transitions. [2024-09-11 19:27:36,427 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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 19:27:36,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 421 transitions. [2024-09-11 19:27:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:36,428 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:36,428 INFO L216 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:36,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-11 19:27:36,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:27:36,629 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:36,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 86998709, now seen corresponding path program 6 times [2024-09-11 19:27:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133437433] [2024-09-11 19:27:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133437433] [2024-09-11 19:27:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133437433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263564157] [2024-09-11 19:27:36,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:36,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:36,900 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:36,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-11 19:27:36,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:27:36,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:36,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:27:36,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:36,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263564157] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:37,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-09-11 19:27:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615352914] [2024-09-11 19:27:37,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:37,362 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:27:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:27:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:27:37,362 INFO L87 Difference]: Start difference. First operand 298 states and 421 transitions. Second operand has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 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 19:27:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:47,615 INFO L93 Difference]: Finished difference Result 1354 states and 1998 transitions. [2024-09-11 19:27:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-09-11 19:27:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 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 26 [2024-09-11 19:27:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:47,619 INFO L225 Difference]: With dead ends: 1354 [2024-09-11 19:27:47,619 INFO L226 Difference]: Without dead ends: 1291 [2024-09-11 19:27:47,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6997 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=5082, Invalid=13550, Unknown=0, NotChecked=0, Total=18632 [2024-09-11 19:27:47,623 INFO L434 NwaCegarLoop]: 100 mSDtfsCounter, 1683 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:47,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 1542 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-11 19:27:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2024-09-11 19:27:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 337. [2024-09-11 19:27:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.431547619047619) internal successors, (481), 336 states have internal predecessors, (481), 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 19:27:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 481 transitions. [2024-09-11 19:27:47,835 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 481 transitions. Word has length 26 [2024-09-11 19:27:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:47,835 INFO L474 AbstractCegarLoop]: Abstraction has 337 states and 481 transitions. [2024-09-11 19:27:47,836 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 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 19:27:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 481 transitions. [2024-09-11 19:27:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:27:47,836 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:47,837 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:47,849 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-11 19:27:48,037 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 19:27:48,037 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:48,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash -489759657, now seen corresponding path program 6 times [2024-09-11 19:27:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361297785] [2024-09-11 19:27:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361297785] [2024-09-11 19:27:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361297785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907263369] [2024-09-11 19:27:48,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:48,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:48,279 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-11 19:27:48,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:27:48,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:48,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:27:48,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:48,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907263369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:48,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 33 [2024-09-11 19:27:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999505071] [2024-09-11 19:27:48,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:48,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:27:48,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:27:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:27:48,829 INFO L87 Difference]: Start difference. First operand 337 states and 481 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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 19:27:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:58,554 INFO L93 Difference]: Finished difference Result 575 states and 800 transitions. [2024-09-11 19:27:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-09-11 19:27:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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 28 [2024-09-11 19:27:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:58,556 INFO L225 Difference]: With dead ends: 575 [2024-09-11 19:27:58,556 INFO L226 Difference]: Without dead ends: 523 [2024-09-11 19:27:58,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12848 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2382, Invalid=35060, Unknown=0, NotChecked=0, Total=37442 [2024-09-11 19:27:58,558 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 402 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 4474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:58,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 482 Invalid, 4474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-11 19:27:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-09-11 19:27:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 355. [2024-09-11 19:27:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.42090395480226) internal successors, (503), 354 states have internal predecessors, (503), 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 19:27:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 503 transitions. [2024-09-11 19:27:58,815 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 503 transitions. Word has length 28 [2024-09-11 19:27:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:58,816 INFO L474 AbstractCegarLoop]: Abstraction has 355 states and 503 transitions. [2024-09-11 19:27:58,816 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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 19:27:58,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 503 transitions. [2024-09-11 19:27:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:58,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:58,818 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:58,830 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:59,021 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-11 19:27:59,022 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:59,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2069624195, now seen corresponding path program 7 times [2024-09-11 19:27:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227268753] [2024-09-11 19:27:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:27:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227268753] [2024-09-11 19:27:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227268753] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801652304] [2024-09-11 19:27:59,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:59,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:59,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:59,121 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:59,124 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-11 19:27:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:59,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:27:59,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:27:59,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:27:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801652304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:59,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:59,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-09-11 19:27:59,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855640825] [2024-09-11 19:27:59,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:59,259 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:59,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:59,260 INFO L87 Difference]: Start difference. First operand 355 states and 503 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 19:27:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:59,965 INFO L93 Difference]: Finished difference Result 517 states and 741 transitions. [2024-09-11 19:27:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:27:59,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 29 [2024-09-11 19:27:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:59,967 INFO L225 Difference]: With dead ends: 517 [2024-09-11 19:27:59,967 INFO L226 Difference]: Without dead ends: 484 [2024-09-11 19:27:59,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:27:59,968 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 99 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:59,968 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 119 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-09-11 19:28:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 418. [2024-09-11 19:28:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.4436450839328536) internal successors, (602), 417 states have internal predecessors, (602), 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 19:28:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 602 transitions. [2024-09-11 19:28:00,330 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 602 transitions. Word has length 29 [2024-09-11 19:28:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:00,330 INFO L474 AbstractCegarLoop]: Abstraction has 418 states and 602 transitions. [2024-09-11 19:28:00,330 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 19:28:00,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 602 transitions. [2024-09-11 19:28:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:28:00,331 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:00,331 INFO L216 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:00,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:00,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:28:00,533 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash -497890204, now seen corresponding path program 4 times [2024-09-11 19:28:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850336401] [2024-09-11 19:28:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:28:00,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:00,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850336401] [2024-09-11 19:28:00,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850336401] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:00,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692929844] [2024-09-11 19:28:00,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:28:00,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:00,739 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:00,740 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-11 19:28:00,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:28:00,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:00,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 19:28:00,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:28:00,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-09-11 19:28:00,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692929844] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:00,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 5] total 23 [2024-09-11 19:28:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473029012] [2024-09-11 19:28:00,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:00,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:28:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:28:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:28:00,874 INFO L87 Difference]: Start difference. First operand 418 states and 602 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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 19:28:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:03,134 INFO L93 Difference]: Finished difference Result 913 states and 1267 transitions. [2024-09-11 19:28:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-11 19:28:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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 29 [2024-09-11 19:28:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:03,137 INFO L225 Difference]: With dead ends: 913 [2024-09-11 19:28:03,137 INFO L226 Difference]: Without dead ends: 876 [2024-09-11 19:28:03,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=518, Invalid=6792, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:28:03,138 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 153 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:03,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1634 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:28:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-09-11 19:28:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 438. [2024-09-11 19:28:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.4416475972540046) internal successors, (630), 437 states have internal predecessors, (630), 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 19:28:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 630 transitions. [2024-09-11 19:28:03,504 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 630 transitions. Word has length 29 [2024-09-11 19:28:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:03,505 INFO L474 AbstractCegarLoop]: Abstraction has 438 states and 630 transitions. [2024-09-11 19:28:03,505 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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 19:28:03,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 630 transitions. [2024-09-11 19:28:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:28:03,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:03,506 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:03,518 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-11 19:28:03,710 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-11 19:28:03,710 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:03,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2111968839, now seen corresponding path program 5 times [2024-09-11 19:28:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707515381] [2024-09-11 19:28:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-11 19:28:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707515381] [2024-09-11 19:28:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707515381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131404356] [2024-09-11 19:28:03,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:28:03,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:03,857 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:03,858 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-11 19:28:03,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:28:03,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:03,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 19:28:03,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-11 19:28:03,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 19:28:04,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131404356] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:04,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:04,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 26 [2024-09-11 19:28:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887762515] [2024-09-11 19:28:04,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:04,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:28:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:28:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:28:04,126 INFO L87 Difference]: Start difference. First operand 438 states and 630 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 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 19:28:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:05,603 INFO L93 Difference]: Finished difference Result 692 states and 914 transitions. [2024-09-11 19:28:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 19:28:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 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 30 [2024-09-11 19:28:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:05,605 INFO L225 Difference]: With dead ends: 692 [2024-09-11 19:28:05,605 INFO L226 Difference]: Without dead ends: 624 [2024-09-11 19:28:05,606 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=2312, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:28:05,606 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 127 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:05,606 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 805 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:28:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-09-11 19:28:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 420. [2024-09-11 19:28:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.4248210023866348) internal successors, (597), 419 states have internal predecessors, (597), 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 19:28:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 597 transitions. [2024-09-11 19:28:05,978 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 597 transitions. Word has length 30 [2024-09-11 19:28:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:05,979 INFO L474 AbstractCegarLoop]: Abstraction has 420 states and 597 transitions. [2024-09-11 19:28:05,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 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 19:28:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 597 transitions. [2024-09-11 19:28:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:28:05,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:05,980 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:05,992 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:06,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:28:06,181 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 66069331, now seen corresponding path program 7 times [2024-09-11 19:28:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:06,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227683934] [2024-09-11 19:28:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:28:06,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227683934] [2024-09-11 19:28:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227683934] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439636944] [2024-09-11 19:28:06,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:28:06,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:06,405 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:06,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-11 19:28:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:06,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:28:06,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:28:06,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:28:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439636944] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:07,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 37 [2024-09-11 19:28:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577099214] [2024-09-11 19:28:07,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:07,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:28:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:28:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1312, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:28:07,071 INFO L87 Difference]: Start difference. First operand 420 states and 597 transitions. Second operand has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 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 19:28:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:19,865 INFO L93 Difference]: Finished difference Result 679 states and 945 transitions. [2024-09-11 19:28:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2024-09-11 19:28:19,865 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 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 31 [2024-09-11 19:28:19,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:19,868 INFO L225 Difference]: With dead ends: 679 [2024-09-11 19:28:19,868 INFO L226 Difference]: Without dead ends: 626 [2024-09-11 19:28:19,871 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16431 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2941, Invalid=44801, Unknown=0, NotChecked=0, Total=47742 [2024-09-11 19:28:19,874 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 378 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4907 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 4907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:19,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 607 Invalid, 5310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 4907 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-09-11 19:28:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-09-11 19:28:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 434. [2024-09-11 19:28:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.4110854503464203) internal successors, (611), 433 states have internal predecessors, (611), 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 19:28:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 611 transitions. [2024-09-11 19:28:20,267 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 611 transitions. Word has length 31 [2024-09-11 19:28:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:20,267 INFO L474 AbstractCegarLoop]: Abstraction has 434 states and 611 transitions. [2024-09-11 19:28:20,268 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 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 19:28:20,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 611 transitions. [2024-09-11 19:28:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:28:20,268 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:20,269 INFO L216 NwaCegarLoop]: trace histogram [14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:20,281 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-11 19:28:20,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-11 19:28:20,469 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:20,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash -119038510, now seen corresponding path program 8 times [2024-09-11 19:28:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:20,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288670143] [2024-09-11 19:28:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:28:20,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:20,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288670143] [2024-09-11 19:28:20,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288670143] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:20,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966036646] [2024-09-11 19:28:20,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:28:20,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:20,798 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:20,802 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-11 19:28:20,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:28:20,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:20,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-11 19:28:20,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:28:20,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-11 19:28:20,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966036646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:20,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 5] total 24 [2024-09-11 19:28:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034771000] [2024-09-11 19:28:20,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:20,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:28:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:28:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:28:20,977 INFO L87 Difference]: Start difference. First operand 434 states and 611 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 19:28:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:23,823 INFO L93 Difference]: Finished difference Result 956 states and 1298 transitions. [2024-09-11 19:28:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-11 19:28:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 31 [2024-09-11 19:28:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:23,826 INFO L225 Difference]: With dead ends: 956 [2024-09-11 19:28:23,826 INFO L226 Difference]: Without dead ends: 899 [2024-09-11 19:28:23,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=585, Invalid=8727, Unknown=0, NotChecked=0, Total=9312 [2024-09-11 19:28:23,827 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 173 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:23,827 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1759 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 19:28:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-09-11 19:28:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 468. [2024-09-11 19:28:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.4089935760171306) internal successors, (658), 467 states have internal predecessors, (658), 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 19:28:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 658 transitions. [2024-09-11 19:28:24,258 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 658 transitions. Word has length 31 [2024-09-11 19:28:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:24,259 INFO L474 AbstractCegarLoop]: Abstraction has 468 states and 658 transitions. [2024-09-11 19:28:24,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 19:28:24,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 658 transitions. [2024-09-11 19:28:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:28:24,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:24,260 INFO L216 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:24,272 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-11 19:28:24,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:24,464 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1595890972, now seen corresponding path program 9 times [2024-09-11 19:28:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332326637] [2024-09-11 19:28:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:28:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332326637] [2024-09-11 19:28:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332326637] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608904828] [2024-09-11 19:28:24,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:28:24,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:24,745 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:24,746 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-11 19:28:24,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-11 19:28:24,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:24,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:28:24,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:28:24,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:28:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608904828] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:25,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2024-09-11 19:28:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067422477] [2024-09-11 19:28:25,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:25,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:28:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:28:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:28:25,344 INFO L87 Difference]: Start difference. First operand 468 states and 658 transitions. Second operand has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 40 states have internal predecessors, (53), 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 19:29:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:00,309 INFO L93 Difference]: Finished difference Result 2145 states and 3126 transitions. [2024-09-11 19:29:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2024-09-11 19:29:00,309 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 40 states have internal predecessors, (53), 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 33 [2024-09-11 19:29:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:00,316 INFO L225 Difference]: With dead ends: 2145 [2024-09-11 19:29:00,316 INFO L226 Difference]: Without dead ends: 2041 [2024-09-11 19:29:00,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27327 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=15173, Invalid=51133, Unknown=0, NotChecked=0, Total=66306 [2024-09-11 19:29:00,320 INFO L434 NwaCegarLoop]: 124 mSDtfsCounter, 3340 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 1360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:00,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 2181 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1360 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-09-11 19:29:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2024-09-11 19:29:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 528. [2024-09-11 19:29:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.430740037950664) internal successors, (754), 527 states have internal predecessors, (754), 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 19:29:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 754 transitions. [2024-09-11 19:29:00,882 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 754 transitions. Word has length 33 [2024-09-11 19:29:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:00,883 INFO L474 AbstractCegarLoop]: Abstraction has 528 states and 754 transitions. [2024-09-11 19:29:00,883 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 40 states have internal predecessors, (53), 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 19:29:00,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 754 transitions. [2024-09-11 19:29:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:29:00,884 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:00,884 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:00,897 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-11 19:29:01,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:01,086 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1746003926, now seen corresponding path program 10 times [2024-09-11 19:29:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:01,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346169502] [2024-09-11 19:29:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:29:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346169502] [2024-09-11 19:29:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346169502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37137082] [2024-09-11 19:29:01,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:29:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:01,261 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:01,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-11 19:29:01,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:29:01,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:01,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:29:01,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 19:29:01,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 19:29:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37137082] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:01,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2024-09-11 19:29:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141287590] [2024-09-11 19:29:01,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:01,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:29:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:29:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:29:01,533 INFO L87 Difference]: Start difference. First operand 528 states and 754 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 19:29:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:02,821 INFO L93 Difference]: Finished difference Result 746 states and 1080 transitions. [2024-09-11 19:29:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:29:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 34 [2024-09-11 19:29:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:02,825 INFO L225 Difference]: With dead ends: 746 [2024-09-11 19:29:02,825 INFO L226 Difference]: Without dead ends: 705 [2024-09-11 19:29:02,825 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:29:02,826 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 97 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:02,826 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 195 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-09-11 19:29:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 603. [2024-09-11 19:29:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.451827242524917) internal successors, (874), 602 states have internal predecessors, (874), 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 19:29:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 874 transitions. [2024-09-11 19:29:03,490 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 874 transitions. Word has length 34 [2024-09-11 19:29:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:03,490 INFO L474 AbstractCegarLoop]: Abstraction has 603 states and 874 transitions. [2024-09-11 19:29:03,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 19:29:03,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 874 transitions. [2024-09-11 19:29:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:29:03,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:03,492 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:03,507 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-11 19:29:03,692 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:03,692 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:03,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1140052265, now seen corresponding path program 6 times [2024-09-11 19:29:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:03,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133039545] [2024-09-11 19:29:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-11 19:29:03,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133039545] [2024-09-11 19:29:03,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133039545] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186214181] [2024-09-11 19:29:03,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:29:03,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:03,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:03,910 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:03,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-11 19:29:03,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:29:03,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:03,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:29:03,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-11 19:29:04,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-11 19:29:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186214181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:04,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2024-09-11 19:29:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861130728] [2024-09-11 19:29:04,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:04,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:29:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:29:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:29:04,274 INFO L87 Difference]: Start difference. First operand 603 states and 874 transitions. Second operand has 31 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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 19:29:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:06,598 INFO L93 Difference]: Finished difference Result 954 states and 1274 transitions. [2024-09-11 19:29:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-11 19:29:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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 34 [2024-09-11 19:29:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:06,602 INFO L225 Difference]: With dead ends: 954 [2024-09-11 19:29:06,602 INFO L226 Difference]: Without dead ends: 852 [2024-09-11 19:29:06,603 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=3449, Unknown=0, NotChecked=0, Total=3906 [2024-09-11 19:29:06,603 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 151 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:06,603 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1066 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:29:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-09-11 19:29:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 581. [2024-09-11 19:29:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.436206896551724) internal successors, (833), 580 states have internal predecessors, (833), 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 19:29:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 833 transitions. [2024-09-11 19:29:07,308 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 833 transitions. Word has length 34 [2024-09-11 19:29:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:07,308 INFO L474 AbstractCegarLoop]: Abstraction has 581 states and 833 transitions. [2024-09-11 19:29:07,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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 19:29:07,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 833 transitions. [2024-09-11 19:29:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:29:07,317 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:07,317 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:07,330 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-11 19:29:07,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:29:07,518 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:07,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -481794345, now seen corresponding path program 8 times [2024-09-11 19:29:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633386348] [2024-09-11 19:29:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:29:07,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633386348] [2024-09-11 19:29:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633386348] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341815791] [2024-09-11 19:29:07,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:29:07,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:07,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:07,845 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:07,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-11 19:29:07,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:29:07,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:07,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:29:07,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:29:08,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:29:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341815791] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:08,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:08,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 30 [2024-09-11 19:29:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485418866] [2024-09-11 19:29:08,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:08,510 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:29:08,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:29:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:29:08,511 INFO L87 Difference]: Start difference. First operand 581 states and 833 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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 19:29:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:18,527 INFO L93 Difference]: Finished difference Result 890 states and 1251 transitions. [2024-09-11 19:29:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-09-11 19:29:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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 34 [2024-09-11 19:29:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:18,530 INFO L225 Difference]: With dead ends: 890 [2024-09-11 19:29:18,530 INFO L226 Difference]: Without dead ends: 839 [2024-09-11 19:29:18,532 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 49 SyntacticMatches, 16 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18147 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3253, Invalid=45367, Unknown=0, NotChecked=0, Total=48620 [2024-09-11 19:29:18,533 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 418 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:18,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 410 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-11 19:29:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-09-11 19:29:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 560. [2024-09-11 19:29:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.4239713774597496) internal successors, (796), 559 states have internal predecessors, (796), 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 19:29:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 796 transitions. [2024-09-11 19:29:19,151 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 796 transitions. Word has length 34 [2024-09-11 19:29:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:19,151 INFO L474 AbstractCegarLoop]: Abstraction has 560 states and 796 transitions. [2024-09-11 19:29:19,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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 19:29:19,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 796 transitions. [2024-09-11 19:29:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:29:19,152 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:19,152 INFO L216 NwaCegarLoop]: trace histogram [16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:19,164 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-11 19:29:19,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-11 19:29:19,357 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:19,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -162387148, now seen corresponding path program 7 times [2024-09-11 19:29:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206920935] [2024-09-11 19:29:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:29:19,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:19,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206920935] [2024-09-11 19:29:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206920935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741080137] [2024-09-11 19:29:19,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:29:19,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:19,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:19,633 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:19,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-11 19:29:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:19,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 19:29:19,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:29:19,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-09-11 19:29:19,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741080137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:19,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:19,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 9] total 34 [2024-09-11 19:29:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978792888] [2024-09-11 19:29:19,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:19,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:29:19,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:29:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:29:19,963 INFO L87 Difference]: Start difference. First operand 560 states and 796 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 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 19:29:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:24,898 INFO L93 Difference]: Finished difference Result 1292 states and 1762 transitions. [2024-09-11 19:29:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-09-11 19:29:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 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 35 [2024-09-11 19:29:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:24,902 INFO L225 Difference]: With dead ends: 1292 [2024-09-11 19:29:24,902 INFO L226 Difference]: Without dead ends: 1251 [2024-09-11 19:29:24,903 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6492 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1557, Invalid=19035, Unknown=0, NotChecked=0, Total=20592 [2024-09-11 19:29:24,903 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 237 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:24,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2400 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 4194 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-11 19:29:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-09-11 19:29:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 603. [2024-09-11 19:29:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.4252491694352158) internal successors, (858), 602 states have internal predecessors, (858), 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 19:29:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 858 transitions. [2024-09-11 19:29:25,613 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 858 transitions. Word has length 35 [2024-09-11 19:29:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:25,613 INFO L474 AbstractCegarLoop]: Abstraction has 603 states and 858 transitions. [2024-09-11 19:29:25,614 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 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 19:29:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 858 transitions. [2024-09-11 19:29:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:29:25,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:25,615 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:25,631 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-11 19:29:25,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-11 19:29:25,819 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:25,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1807374419, now seen corresponding path program 9 times [2024-09-11 19:29:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200830278] [2024-09-11 19:29:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:25,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:29:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200830278] [2024-09-11 19:29:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200830278] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719574650] [2024-09-11 19:29:26,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:29:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:26,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:26,196 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:26,198 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-11 19:29:26,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:29:26,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:26,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:29:26,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:29:26,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:29:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719574650] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:27,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:27,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 33 [2024-09-11 19:29:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738285571] [2024-09-11 19:29:27,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:27,040 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:29:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:29:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:29:27,040 INFO L87 Difference]: Start difference. First operand 603 states and 858 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 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 19:29:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:47,437 INFO L93 Difference]: Finished difference Result 1137 states and 1556 transitions. [2024-09-11 19:29:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2024-09-11 19:29:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 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 19:29:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:47,440 INFO L225 Difference]: With dead ends: 1137 [2024-09-11 19:29:47,440 INFO L226 Difference]: Without dead ends: 1055 [2024-09-11 19:29:47,444 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 53 SyntacticMatches, 18 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48940 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=6359, Invalid=113011, Unknown=0, NotChecked=0, Total=119370 [2024-09-11 19:29:47,445 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 659 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 5858 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 6564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 5858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:47,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 586 Invalid, 6564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 5858 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-09-11 19:29:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-09-11 19:29:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 617. [2024-09-11 19:29:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.3977272727272727) internal successors, (861), 616 states have internal predecessors, (861), 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 19:29:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 861 transitions. [2024-09-11 19:29:48,192 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 861 transitions. Word has length 37 [2024-09-11 19:29:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:48,193 INFO L474 AbstractCegarLoop]: Abstraction has 617 states and 861 transitions. [2024-09-11 19:29:48,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 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 19:29:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 861 transitions. [2024-09-11 19:29:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:29:48,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:48,194 INFO L216 NwaCegarLoop]: trace histogram [17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:48,206 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:48,397 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:29:48,397 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:48,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash 317031234, now seen corresponding path program 11 times [2024-09-11 19:29:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:48,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532494174] [2024-09-11 19:29:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:29:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532494174] [2024-09-11 19:29:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532494174] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378306781] [2024-09-11 19:29:48,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:29:48,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:48,676 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:48,677 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-11 19:29:48,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-11 19:29:48,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:48,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 19:29:48,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:29:48,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-09-11 19:29:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378306781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:49,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:49,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 9] total 36 [2024-09-11 19:29:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654109203] [2024-09-11 19:29:49,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:49,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:29:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:29:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:29:49,140 INFO L87 Difference]: Start difference. First operand 617 states and 861 transitions. Second operand has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 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 19:29:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:55,615 INFO L93 Difference]: Finished difference Result 1398 states and 1871 transitions. [2024-09-11 19:29:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-09-11 19:29:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 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 19:29:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:55,620 INFO L225 Difference]: With dead ends: 1398 [2024-09-11 19:29:55,620 INFO L226 Difference]: Without dead ends: 1331 [2024-09-11 19:29:55,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8811 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1973, Invalid=24433, Unknown=0, NotChecked=0, Total=26406 [2024-09-11 19:29:55,621 INFO L434 NwaCegarLoop]: 116 mSDtfsCounter, 251 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 4878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:55,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2591 Invalid, 4878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-11 19:29:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-09-11 19:29:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 615. [2024-09-11 19:29:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3957654723127035) internal successors, (857), 614 states have internal predecessors, (857), 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 19:29:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 857 transitions. [2024-09-11 19:29:56,446 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 857 transitions. Word has length 37 [2024-09-11 19:29:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:56,446 INFO L474 AbstractCegarLoop]: Abstraction has 615 states and 857 transitions. [2024-09-11 19:29:56,446 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 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 19:29:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 857 transitions. [2024-09-11 19:29:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:29:56,447 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:56,447 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:56,462 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:56,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-11 19:29:56,648 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:56,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2095916573, now seen corresponding path program 12 times [2024-09-11 19:29:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:56,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435561933] [2024-09-11 19:29:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:56,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-09-11 19:29:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435561933] [2024-09-11 19:29:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435561933] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668363607] [2024-09-11 19:29:56,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:29:56,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:56,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:56,802 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-11 19:29:56,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:29:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:56,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:29:56,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-11 19:29:56,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-11 19:29:57,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668363607] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:57,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:57,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2024-09-11 19:29:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640254425] [2024-09-11 19:29:57,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:57,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:29:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:29:57,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:29:57,154 INFO L87 Difference]: Start difference. First operand 615 states and 857 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 19:29:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:59,310 INFO L93 Difference]: Finished difference Result 915 states and 1294 transitions. [2024-09-11 19:29:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:29:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 39 [2024-09-11 19:29:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:59,314 INFO L225 Difference]: With dead ends: 915 [2024-09-11 19:29:59,314 INFO L226 Difference]: Without dead ends: 869 [2024-09-11 19:29:59,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 63 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=362, Invalid=970, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:29:59,314 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 144 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:59,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 211 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-09-11 19:30:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 708. [2024-09-11 19:30:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.42998585572843) internal successors, (1011), 707 states have internal predecessors, (1011), 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 19:30:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1011 transitions. [2024-09-11 19:30:00,284 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1011 transitions. Word has length 39 [2024-09-11 19:30:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:00,284 INFO L474 AbstractCegarLoop]: Abstraction has 708 states and 1011 transitions. [2024-09-11 19:30:00,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 19:30:00,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1011 transitions. [2024-09-11 19:30:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:30:00,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:00,285 INFO L216 NwaCegarLoop]: trace histogram [18, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:00,300 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-11 19:30:00,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-11 19:30:00,490 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:00,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash 905921972, now seen corresponding path program 13 times [2024-09-11 19:30:00,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:00,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758401751] [2024-09-11 19:30:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:00,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:30:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758401751] [2024-09-11 19:30:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758401751] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163606780] [2024-09-11 19:30:00,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:30:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:00,797 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:00,802 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-11 19:30:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:00,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:30:00,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:30:00,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-11 19:30:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163606780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:00,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 6] total 30 [2024-09-11 19:30:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599450032] [2024-09-11 19:30:00,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:00,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:30:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:00,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:30:00,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:30:00,990 INFO L87 Difference]: Start difference. First operand 708 states and 1011 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 19:30:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:06,619 INFO L93 Difference]: Finished difference Result 1537 states and 2089 transitions. [2024-09-11 19:30:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-09-11 19:30:06,620 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 39 [2024-09-11 19:30:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:06,624 INFO L225 Difference]: With dead ends: 1537 [2024-09-11 19:30:06,624 INFO L226 Difference]: Without dead ends: 1447 [2024-09-11 19:30:06,624 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6931 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1110, Invalid=20352, Unknown=0, NotChecked=0, Total=21462 [2024-09-11 19:30:06,625 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 220 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:06,625 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2936 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 19:30:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-09-11 19:30:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 759. [2024-09-11 19:30:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.4313984168865435) internal successors, (1085), 758 states have internal predecessors, (1085), 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 19:30:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1085 transitions. [2024-09-11 19:30:07,747 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1085 transitions. Word has length 39 [2024-09-11 19:30:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:07,747 INFO L474 AbstractCegarLoop]: Abstraction has 759 states and 1085 transitions. [2024-09-11 19:30:07,748 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 19:30:07,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1085 transitions. [2024-09-11 19:30:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:30:07,749 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:07,749 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:07,761 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-11 19:30:07,949 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-11 19:30:07,949 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:07,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1791286089, now seen corresponding path program 8 times [2024-09-11 19:30:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459124781] [2024-09-11 19:30:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-11 19:30:08,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:08,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459124781] [2024-09-11 19:30:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459124781] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:08,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673806612] [2024-09-11 19:30:08,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:30:08,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:08,143 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:08,144 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-11 19:30:08,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:30:08,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:08,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-11 19:30:08,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-11 19:30:08,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-09-11 19:30:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673806612] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:08,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:08,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 14] total 37 [2024-09-11 19:30:08,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988023232] [2024-09-11 19:30:08,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:08,530 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-11 19:30:08,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-11 19:30:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:30:08,531 INFO L87 Difference]: Start difference. First operand 759 states and 1085 transitions. Second operand has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 19:30:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:12,309 INFO L93 Difference]: Finished difference Result 1227 states and 1631 transitions. [2024-09-11 19:30:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-11 19:30:12,309 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 40 [2024-09-11 19:30:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:12,313 INFO L225 Difference]: With dead ends: 1227 [2024-09-11 19:30:12,313 INFO L226 Difference]: Without dead ends: 1100 [2024-09-11 19:30:12,313 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=743, Invalid=6739, Unknown=0, NotChecked=0, Total=7482 [2024-09-11 19:30:12,314 INFO L434 NwaCegarLoop]: 96 mSDtfsCounter, 215 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:12,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1667 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:30:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2024-09-11 19:30:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 737. [2024-09-11 19:30:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.4184782608695652) internal successors, (1044), 736 states have internal predecessors, (1044), 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 19:30:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1044 transitions. [2024-09-11 19:30:13,393 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1044 transitions. Word has length 40 [2024-09-11 19:30:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:13,393 INFO L474 AbstractCegarLoop]: Abstraction has 737 states and 1044 transitions. [2024-09-11 19:30:13,393 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 19:30:13,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1044 transitions. [2024-09-11 19:30:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:30:13,394 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:13,394 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:13,406 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-11 19:30:13,595 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-11 19:30:13,595 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:13,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:13,596 INFO L85 PathProgramCache]: Analyzing trace with hash 997781847, now seen corresponding path program 10 times [2024-09-11 19:30:13,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:13,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134599398] [2024-09-11 19:30:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:13,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:30:13,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134599398] [2024-09-11 19:30:13,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134599398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339153898] [2024-09-11 19:30:13,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:30:13,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:13,922 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:13,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-11 19:30:13,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:30:13,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:13,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-11 19:30:13,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:30:14,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:30:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339153898] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:14,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 46 [2024-09-11 19:30:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189996098] [2024-09-11 19:30:14,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:14,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-11 19:30:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-11 19:30:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1829, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:30:14,646 INFO L87 Difference]: Start difference. First operand 737 states and 1044 transitions. Second operand has 47 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 46 states have internal predecessors, (81), 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 19:31:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:41,127 INFO L93 Difference]: Finished difference Result 2716 states and 3867 transitions. [2024-09-11 19:31:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 544 states. [2024-09-11 19:31:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 46 states have internal predecessors, (81), 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 40 [2024-09-11 19:31:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:41,134 INFO L225 Difference]: With dead ends: 2716 [2024-09-11 19:31:41,134 INFO L226 Difference]: Without dead ends: 2662 [2024-09-11 19:31:41,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153231 ImplicationChecksByTransitivity, 75.3s TimeCoverageRelationStatistics Valid=69361, Invalid=248171, Unknown=0, NotChecked=0, Total=317532 [2024-09-11 19:31:41,144 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 2461 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 1558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 6750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1558 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:41,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2461 Valid, 1345 Invalid, 6750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1558 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-09-11 19:31:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2024-09-11 19:31:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 820. [2024-09-11 19:31:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.442002442002442) internal successors, (1181), 819 states have internal predecessors, (1181), 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 19:31:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1181 transitions. [2024-09-11 19:31:42,441 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1181 transitions. Word has length 40 [2024-09-11 19:31:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:42,442 INFO L474 AbstractCegarLoop]: Abstraction has 820 states and 1181 transitions. [2024-09-11 19:31:42,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 46 states have internal predecessors, (81), 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 19:31:42,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1181 transitions. [2024-09-11 19:31:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:31:42,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:42,443 INFO L216 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:42,459 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-11 19:31:42,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:42,648 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:42,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash -705373897, now seen corresponding path program 4 times [2024-09-11 19:31:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:42,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775762618] [2024-09-11 19:31:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:43,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775762618] [2024-09-11 19:31:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775762618] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178641763] [2024-09-11 19:31:43,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:31:43,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:43,126 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:43,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-11 19:31:43,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:31:43,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:43,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-11 19:31:43,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:43,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178641763] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:44,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:44,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2024-09-11 19:31:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870860438] [2024-09-11 19:31:44,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:44,545 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-11 19:31:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-11 19:31:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=3328, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:31:44,546 INFO L87 Difference]: Start difference. First operand 820 states and 1181 transitions. Second operand has 67 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 66 states have internal predecessors, (76), 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)