./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.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/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --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 20:24:18,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:24:18,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:24:18,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:24:18,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:24:18,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:24:18,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:24:18,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:24:18,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:24:18,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:24:18,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:24:18,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:24:18,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:24:18,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:24:18,422 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:24:18,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:24:18,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:24:18,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:24:18,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:24:18,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:24:18,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:24:18,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:24:18,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:24:18,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:24:18,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:24:18,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:24:18,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:24:18,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:24:18,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:24:18,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:24:18,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:24:18,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:24:18,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:18,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:24:18,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:24:18,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:24:18,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:24:18,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:24:18,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:24:18,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:24:18,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:24:18,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:24:18,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:24:18,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:24:18,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:24:18,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:24:18,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:24:18,690 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:24:18,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-11 20:24:20,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:24:20,230 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:24:20,230 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-11 20:24:20,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3f61444d6/e16592962afc46b497fae55036a57cae/FLAG98634c8f0 [2024-09-11 20:24:20,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3f61444d6/e16592962afc46b497fae55036a57cae [2024-09-11 20:24:20,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:24:20,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:24:20,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:20,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:24:20,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:24:20,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3168c33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20, skipping insertion in model container [2024-09-11 20:24:20,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:24:20,440 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/recursive/EvenOdd01-1.c[975,988] [2024-09-11 20:24:20,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:20,453 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:24:20,467 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/recursive/EvenOdd01-1.c[975,988] [2024-09-11 20:24:20,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:20,485 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:24:20,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20 WrapperNode [2024-09-11 20:24:20,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:20,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:20,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:24:20,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:24:20,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,513 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-09-11 20:24:20,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:20,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:24:20,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:24:20,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:24:20,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,540 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 20:24:20,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:24:20,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:24:20,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:24:20,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:24:20,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (1/1) ... [2024-09-11 20:24:20,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:20,590 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 20:24:20,600 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 20:24:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:24:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-09-11 20:24:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-09-11 20:24:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:24:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-09-11 20:24:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-09-11 20:24:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:24:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:24:20,715 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:24:20,717 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:24:20,863 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-11 20:24:20,864 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:24:20,893 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:24:20,894 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:24:20,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:20 BoogieIcfgContainer [2024-09-11 20:24:20,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:24:20,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:24:20,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:24:20,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:24:20,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:24:20" (1/3) ... [2024-09-11 20:24:20,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a0282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:20, skipping insertion in model container [2024-09-11 20:24:20,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:20" (2/3) ... [2024-09-11 20:24:20,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a0282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:20, skipping insertion in model container [2024-09-11 20:24:20,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:20" (3/3) ... [2024-09-11 20:24:20,906 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-09-11 20:24:20,924 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:24:20,924 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:24:20,986 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:24:20,994 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;@6248fcc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:24:20,995 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:24:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 20:24:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 20:24:21,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:21,009 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:21,010 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:21,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1415048223, now seen corresponding path program 1 times [2024-09-11 20:24:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:21,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687793908] [2024-09-11 20:24:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,723 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 20:24:21,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687793908] [2024-09-11 20:24:21,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687793908] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:21,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:21,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-11 20:24:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374813864] [2024-09-11 20:24:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:21,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 20:24:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 20:24:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 20:24:21,791 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:21,902 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-09-11 20:24:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 20:24:21,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-11 20:24:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:21,912 INFO L225 Difference]: With dead ends: 33 [2024-09-11 20:24:21,913 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 20:24:21,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 20:24:21,919 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:21,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 20:24:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-11 20:24:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-11 20:24:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-11 20:24:21,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2024-09-11 20:24:21,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:21,954 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-11 20:24:21,954 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:21,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-11 20:24:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 20:24:21,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:21,957 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:21,957 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:24:21,957 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:21,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash -168268323, now seen corresponding path program 1 times [2024-09-11 20:24:21,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361766121] [2024-09-11 20:24:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:21,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,281 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 20:24:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361766121] [2024-09-11 20:24:22,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361766121] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:22,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:22,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-11 20:24:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552512580] [2024-09-11 20:24:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:22,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 20:24:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 20:24:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 20:24:22,287 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:22,371 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-11 20:24:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 20:24:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-11 20:24:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:22,373 INFO L225 Difference]: With dead ends: 29 [2024-09-11 20:24:22,373 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 20:24:22,374 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 20:24:22,376 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:22,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 20:24:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-11 20:24:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-11 20:24:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-11 20:24:22,385 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2024-09-11 20:24:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:22,385 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-11 20:24:22,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:22,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-11 20:24:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 20:24:22,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:22,387 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:22,387 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 20:24:22,387 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:22,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash 236008797, now seen corresponding path program 1 times [2024-09-11 20:24:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614918792] [2024-09-11 20:24:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,473 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 20:24:22,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614918792] [2024-09-11 20:24:22,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614918792] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:22,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018622978] [2024-09-11 20:24:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:22,474 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:22,476 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:24:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:22,514 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-09-11 20:24:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 20:24:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-11 20:24:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:22,516 INFO L225 Difference]: With dead ends: 37 [2024-09-11 20:24:22,516 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 20:24:22,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:22,517 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 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 20:24:22,517 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:24:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 20:24:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-11 20:24:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-11 20:24:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-11 20:24:22,530 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2024-09-11 20:24:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:22,530 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-11 20:24:22,531 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:24:22,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-11 20:24:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 20:24:22,533 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:22,533 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:22,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 20:24:22,533 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1342568457, now seen corresponding path program 1 times [2024-09-11 20:24:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498209127] [2024-09-11 20:24:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:22,903 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 20:24:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498209127] [2024-09-11 20:24:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498209127] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:22,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:22,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-11 20:24:22,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749029694] [2024-09-11 20:24:22,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:22,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 20:24:22,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 20:24:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-11 20:24:22,906 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:24:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:23,040 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-09-11 20:24:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 20:24:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-09-11 20:24:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:23,043 INFO L225 Difference]: With dead ends: 32 [2024-09-11 20:24:23,043 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 20:24:23,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-11 20:24:23,045 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:23,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 20:24:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-09-11 20:24:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-11 20:24:23,065 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2024-09-11 20:24:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:23,065 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-11 20:24:23,066 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:24:23,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-11 20:24:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 20:24:23,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:23,071 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:23,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 20:24:23,071 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:23,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -246412613, now seen corresponding path program 1 times [2024-09-11 20:24:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930829571] [2024-09-11 20:24:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:23,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:23,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930829571] [2024-09-11 20:24:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930829571] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467511612] [2024-09-11 20:24:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:23,168 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:23,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:23,171 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-11 20:24:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:23,209 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-09-11 20:24:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 20:24:23,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-11 20:24:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:23,211 INFO L225 Difference]: With dead ends: 40 [2024-09-11 20:24:23,212 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 20:24:23,212 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:23,213 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:23,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 63 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:24:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 20:24:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-09-11 20:24:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-09-11 20:24:23,224 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 24 [2024-09-11 20:24:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:23,225 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-09-11 20:24:23,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-11 20:24:23,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-09-11 20:24:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 20:24:23,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:23,226 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:23,227 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-11 20:24:23,227 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:23,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:23,227 INFO L85 PathProgramCache]: Analyzing trace with hash -962722745, now seen corresponding path program 1 times [2024-09-11 20:24:23,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:23,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670788326] [2024-09-11 20:24:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,648 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 20:24:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670788326] [2024-09-11 20:24:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670788326] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373031149] [2024-09-11 20:24:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:23,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:23,652 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 20:24:23,654 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 20:24:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 20:24:23,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 20:24:23,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:24,437 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 20:24:24,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373031149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:24,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:24,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-09-11 20:24:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972501960] [2024-09-11 20:24:24,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:24,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 20:24:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 20:24:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-09-11 20:24:24,442 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-11 20:24:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:24,667 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2024-09-11 20:24:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 20:24:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 25 [2024-09-11 20:24:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:24,670 INFO L225 Difference]: With dead ends: 38 [2024-09-11 20:24:24,670 INFO L226 Difference]: Without dead ends: 34 [2024-09-11 20:24:24,670 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-09-11 20:24:24,672 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:24,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 177 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-11 20:24:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-09-11 20:24:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-11 20:24:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-09-11 20:24:24,684 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2024-09-11 20:24:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:24,685 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-09-11 20:24:24,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-11 20:24:24,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-09-11 20:24:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 20:24:24,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:24,688 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:24,705 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 20:24:24,892 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 20:24:24,893 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:24,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash -503357871, now seen corresponding path program 1 times [2024-09-11 20:24:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:24,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741984233] [2024-09-11 20:24:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-11 20:24:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741984233] [2024-09-11 20:24:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741984233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010926529] [2024-09-11 20:24:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:25,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:25,327 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 20:24:25,328 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 20:24:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 20:24:25,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 20:24:25,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 20:24:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010926529] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:26,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-09-11 20:24:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381056814] [2024-09-11 20:24:26,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:26,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 20:24:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 20:24:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-09-11 20:24:26,061 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-11 20:24:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:26,367 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-11 20:24:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 20:24:26,368 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 32 [2024-09-11 20:24:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:26,369 INFO L225 Difference]: With dead ends: 44 [2024-09-11 20:24:26,369 INFO L226 Difference]: Without dead ends: 40 [2024-09-11 20:24:26,370 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-09-11 20:24:26,370 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:26,371 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 195 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-11 20:24:26,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2024-09-11 20:24:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-11 20:24:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-11 20:24:26,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 32 [2024-09-11 20:24:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:26,382 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-11 20:24:26,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-11 20:24:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-11 20:24:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 20:24:26,383 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:26,383 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:26,400 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:26,587 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 20:24:26,588 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1867179313, now seen corresponding path program 2 times [2024-09-11 20:24:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:26,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188455691] [2024-09-11 20:24:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:27,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 20:24:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188455691] [2024-09-11 20:24:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188455691] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223740915] [2024-09-11 20:24:27,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:27,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:27,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:27,091 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 20:24:27,093 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 20:24:27,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:27,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:27,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 20:24:27,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 20:24:27,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:24:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223740915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:28,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-09-11 20:24:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039325003] [2024-09-11 20:24:28,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:28,065 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 20:24:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 20:24:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-09-11 20:24:28,066 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-11 20:24:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:28,405 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-09-11 20:24:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 20:24:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) Word has length 39 [2024-09-11 20:24:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:28,407 INFO L225 Difference]: With dead ends: 50 [2024-09-11 20:24:28,407 INFO L226 Difference]: Without dead ends: 46 [2024-09-11 20:24:28,408 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 20:24:28,409 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:28,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 262 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-11 20:24:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2024-09-11 20:24:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-11 20:24:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-09-11 20:24:28,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 39 [2024-09-11 20:24:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:28,418 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-09-11 20:24:28,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-11 20:24:28,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-09-11 20:24:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 20:24:28,420 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:28,420 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:28,436 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:28,620 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 20:24:28,621 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:28,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2003597525, now seen corresponding path program 2 times [2024-09-11 20:24:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420462260] [2024-09-11 20:24:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:28,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:28,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:28,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 20:24:29,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:29,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420462260] [2024-09-11 20:24:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420462260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:29,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387450371] [2024-09-11 20:24:29,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:29,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:29,162 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 20:24:29,164 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 20:24:29,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:29,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:29,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 20:24:29,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 20:24:29,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 20:24:30,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387450371] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:30,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:30,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-09-11 20:24:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103294132] [2024-09-11 20:24:30,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:30,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 20:24:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 20:24:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-09-11 20:24:30,198 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-11 20:24:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:30,631 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2024-09-11 20:24:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 20:24:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 46 [2024-09-11 20:24:30,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:30,632 INFO L225 Difference]: With dead ends: 56 [2024-09-11 20:24:30,632 INFO L226 Difference]: Without dead ends: 52 [2024-09-11 20:24:30,633 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 20:24:30,634 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:30,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 311 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:24:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-11 20:24:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2024-09-11 20:24:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-11 20:24:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-09-11 20:24:30,644 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 46 [2024-09-11 20:24:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:30,645 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-09-11 20:24:30,645 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-11 20:24:30,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-09-11 20:24:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-11 20:24:30,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:30,646 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:30,662 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 20:24:30,846 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 20:24:30,847 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:30,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash -48123749, now seen corresponding path program 3 times [2024-09-11 20:24:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196292620] [2024-09-11 20:24:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-11 20:24:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196292620] [2024-09-11 20:24:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196292620] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254313851] [2024-09-11 20:24:31,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:24:31,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:31,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:31,512 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 20:24:31,513 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 20:24:31,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 20:24:31,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:31,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-11 20:24:31,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-11 20:24:31,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 20:24:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254313851] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:32,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-09-11 20:24:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346444594] [2024-09-11 20:24:32,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:32,630 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 20:24:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 20:24:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 20:24:32,632 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-11 20:24:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:32,996 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2024-09-11 20:24:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 20:24:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) Word has length 53 [2024-09-11 20:24:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:32,997 INFO L225 Difference]: With dead ends: 62 [2024-09-11 20:24:32,998 INFO L226 Difference]: Without dead ends: 58 [2024-09-11 20:24:32,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 20:24:32,999 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:32,999 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 315 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-11 20:24:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2024-09-11 20:24:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-11 20:24:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-09-11 20:24:33,009 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 53 [2024-09-11 20:24:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:33,010 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-09-11 20:24:33,010 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-11 20:24:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-09-11 20:24:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-11 20:24:33,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:33,011 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:33,023 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 20:24:33,211 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 20:24:33,212 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:33,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2001067387, now seen corresponding path program 3 times [2024-09-11 20:24:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633712969] [2024-09-11 20:24:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-11 20:24:33,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633712969] [2024-09-11 20:24:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633712969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050686614] [2024-09-11 20:24:33,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:24:33,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:33,959 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 20:24:33,960 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 20:24:34,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 20:24:34,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:34,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 20:24:34,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 20:24:34,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 20:24:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050686614] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:35,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-09-11 20:24:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703773421] [2024-09-11 20:24:35,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:35,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 20:24:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 20:24:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 20:24:35,245 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-11 20:24:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:35,714 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2024-09-11 20:24:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 20:24:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 60 [2024-09-11 20:24:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:35,715 INFO L225 Difference]: With dead ends: 68 [2024-09-11 20:24:35,716 INFO L226 Difference]: Without dead ends: 64 [2024-09-11 20:24:35,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 20:24:35,718 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:35,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 293 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:24:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-11 20:24:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2024-09-11 20:24:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-11 20:24:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-09-11 20:24:35,734 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 60 [2024-09-11 20:24:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:35,734 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-09-11 20:24:35,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-11 20:24:35,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-09-11 20:24:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-11 20:24:35,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:35,735 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:35,747 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 20:24:35,935 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 20:24:35,936 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:35,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1494415739, now seen corresponding path program 4 times [2024-09-11 20:24:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:35,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957902926] [2024-09-11 20:24:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-11 20:24:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957902926] [2024-09-11 20:24:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957902926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916008599] [2024-09-11 20:24:36,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:24:36,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:36,809 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 20:24:36,811 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 20:24:36,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:24:36,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:36,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-11 20:24:36,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-11 20:24:37,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 20:24:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916008599] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:38,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:38,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-09-11 20:24:38,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16608577] [2024-09-11 20:24:38,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:38,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 20:24:38,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 20:24:38,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 20:24:38,481 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-11 20:24:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:38,971 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2024-09-11 20:24:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-11 20:24:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 67 [2024-09-11 20:24:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:38,975 INFO L225 Difference]: With dead ends: 74 [2024-09-11 20:24:38,975 INFO L226 Difference]: Without dead ends: 70 [2024-09-11 20:24:38,976 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 20:24:38,976 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:38,977 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 417 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:24:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-11 20:24:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2024-09-11 20:24:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-11 20:24:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-09-11 20:24:39,004 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 67 [2024-09-11 20:24:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:39,005 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-09-11 20:24:39,006 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-09-11 20:24:39,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-09-11 20:24:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-11 20:24:39,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:39,011 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:39,028 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 20:24:39,215 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 20:24:39,216 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:39,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1411305567, now seen corresponding path program 4 times [2024-09-11 20:24:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108259420] [2024-09-11 20:24:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:39,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-09-11 20:24:40,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:40,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108259420] [2024-09-11 20:24:40,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108259420] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:40,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054369052] [2024-09-11 20:24:40,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:24:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:40,218 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 20:24:40,220 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 20:24:40,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:24:40,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:40,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-11 20:24:40,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-11 20:24:40,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 20:24:41,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054369052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:41,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:41,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-09-11 20:24:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344020679] [2024-09-11 20:24:41,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:41,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 20:24:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 20:24:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 20:24:41,995 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 42 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 29 states have internal predecessors, (70), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2024-09-11 20:24:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:42,564 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2024-09-11 20:24:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 20:24:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 29 states have internal predecessors, (70), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) Word has length 74 [2024-09-11 20:24:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:42,565 INFO L225 Difference]: With dead ends: 80 [2024-09-11 20:24:42,565 INFO L226 Difference]: Without dead ends: 76 [2024-09-11 20:24:42,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 20:24:42,567 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:42,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 385 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:24:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-11 20:24:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2024-09-11 20:24:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-11 20:24:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-09-11 20:24:42,584 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 74 [2024-09-11 20:24:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:42,584 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-09-11 20:24:42,585 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 29 states have internal predecessors, (70), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2024-09-11 20:24:42,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-09-11 20:24:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-11 20:24:42,586 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:42,586 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:42,599 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 20:24:42,786 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 20:24:42,787 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:42,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1222670609, now seen corresponding path program 5 times [2024-09-11 20:24:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558237810] [2024-09-11 20:24:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-11 20:24:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558237810] [2024-09-11 20:24:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558237810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246647823] [2024-09-11 20:24:44,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:24:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:44,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:44,039 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 20:24:44,040 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 20:24:44,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-11 20:24:44,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:44,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-11 20:24:44,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-11 20:24:44,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-11 20:24:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246647823] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:45,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-09-11 20:24:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308053732] [2024-09-11 20:24:45,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:45,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 20:24:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 20:24:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 20:24:45,976 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-11 20:24:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:46,751 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2024-09-11 20:24:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 20:24:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 81 [2024-09-11 20:24:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:46,753 INFO L225 Difference]: With dead ends: 86 [2024-09-11 20:24:46,753 INFO L226 Difference]: Without dead ends: 82 [2024-09-11 20:24:46,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 20:24:46,755 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:46,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 487 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:24:46,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-11 20:24:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2024-09-11 20:24:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-11 20:24:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2024-09-11 20:24:46,777 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 81 [2024-09-11 20:24:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:46,778 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2024-09-11 20:24:46,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-11 20:24:46,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-09-11 20:24:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-11 20:24:46,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:46,779 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:46,790 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:46,979 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 20:24:46,980 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:46,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 51720377, now seen corresponding path program 5 times [2024-09-11 20:24:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:46,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309024233] [2024-09-11 20:24:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:46,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:47,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:48,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:48,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:48,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:48,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 20:24:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309024233] [2024-09-11 20:24:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309024233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539940930] [2024-09-11 20:24:48,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:24:48,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:48,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:48,229 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 20:24:48,231 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 20:24:48,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-11 20:24:48,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:48,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-11 20:24:48,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-11 20:24:48,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 20:24:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539940930] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:50,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-09-11 20:24:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428825934] [2024-09-11 20:24:50,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:50,552 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 20:24:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 20:24:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 20:24:50,554 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-11 20:24:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:51,429 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-09-11 20:24:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 20:24:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) Word has length 88 [2024-09-11 20:24:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:51,430 INFO L225 Difference]: With dead ends: 92 [2024-09-11 20:24:51,430 INFO L226 Difference]: Without dead ends: 88 [2024-09-11 20:24:51,432 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 20:24:51,432 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:51,433 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 518 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:24:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-11 20:24:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2024-09-11 20:24:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-11 20:24:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-09-11 20:24:51,454 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 88 [2024-09-11 20:24:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:51,454 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-09-11 20:24:51,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-11 20:24:51,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-09-11 20:24:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-11 20:24:51,455 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:51,455 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:51,474 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:51,655 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 20:24:51,656 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:51,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -170667559, now seen corresponding path program 6 times [2024-09-11 20:24:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:51,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079343890] [2024-09-11 20:24:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:51,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:52,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-11 20:24:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079343890] [2024-09-11 20:24:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079343890] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307149600] [2024-09-11 20:24:53,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:24:53,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:53,175 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 20:24:53,176 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 20:24:53,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 20:24:53,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:53,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-11 20:24:53,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-09-11 20:24:53,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 20:24:55,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307149600] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:55,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:55,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-09-11 20:24:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357768068] [2024-09-11 20:24:55,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:55,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 20:24:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 20:24:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 20:24:55,680 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-11 20:24:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:56,687 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2024-09-11 20:24:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 20:24:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) Word has length 95 [2024-09-11 20:24:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:56,689 INFO L225 Difference]: With dead ends: 98 [2024-09-11 20:24:56,689 INFO L226 Difference]: Without dead ends: 94 [2024-09-11 20:24:56,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 20:24:56,693 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 64 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:56,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 779 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:24:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-11 20:24:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2024-09-11 20:24:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-11 20:24:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-09-11 20:24:56,723 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 95 [2024-09-11 20:24:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:56,724 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-09-11 20:24:56,724 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-11 20:24:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-09-11 20:24:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-11 20:24:56,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:56,726 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:56,743 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 20:24:56,929 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 20:24:56,930 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:56,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -291970157, now seen corresponding path program 6 times [2024-09-11 20:24:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132445882] [2024-09-11 20:24:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:57,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-09-11 20:24:58,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:58,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132445882] [2024-09-11 20:24:58,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132445882] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:58,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540634827] [2024-09-11 20:24:58,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:24:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:58,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:58,638 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 20:24:58,640 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 20:24:58,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 20:24:58,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:58,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-11 20:24:58,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-11 20:24:58,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 20:25:01,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540634827] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:01,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:01,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-09-11 20:25:01,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698277506] [2024-09-11 20:25:01,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:01,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-11 20:25:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-11 20:25:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 20:25:01,442 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 55 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2024-09-11 20:25:02,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:02,524 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2024-09-11 20:25:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 20:25:02,525 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) Word has length 102 [2024-09-11 20:25:02,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:02,526 INFO L225 Difference]: With dead ends: 104 [2024-09-11 20:25:02,526 INFO L226 Difference]: Without dead ends: 100 [2024-09-11 20:25:02,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-09-11 20:25:02,528 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:02,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 709 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:25:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-11 20:25:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2024-09-11 20:25:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-11 20:25:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2024-09-11 20:25:02,560 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 102 [2024-09-11 20:25:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:02,560 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2024-09-11 20:25:02,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2024-09-11 20:25:02,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2024-09-11 20:25:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-11 20:25:02,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:02,563 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:02,576 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 20:25:02,763 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 20:25:02,764 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:02,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1832089789, now seen corresponding path program 7 times [2024-09-11 20:25:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679224376] [2024-09-11 20:25:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:02,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-11 20:25:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679224376] [2024-09-11 20:25:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679224376] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606061273] [2024-09-11 20:25:04,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:25:04,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:04,524 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 20:25:04,525 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 20:25:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-11 20:25:04,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-09-11 20:25:04,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-11 20:25:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606061273] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:07,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:07,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-09-11 20:25:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586013298] [2024-09-11 20:25:07,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:07,657 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-11 20:25:07,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-11 20:25:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 20:25:07,659 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-09-11 20:25:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:08,723 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2024-09-11 20:25:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 20:25:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) Word has length 109 [2024-09-11 20:25:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:08,725 INFO L225 Difference]: With dead ends: 110 [2024-09-11 20:25:08,725 INFO L226 Difference]: Without dead ends: 106 [2024-09-11 20:25:08,728 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 20:25:08,729 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:08,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 765 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:25:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-11 20:25:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2024-09-11 20:25:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-11 20:25:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-09-11 20:25:08,769 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 109 [2024-09-11 20:25:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:08,770 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-09-11 20:25:08,770 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-09-11 20:25:08,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-09-11 20:25:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-11 20:25:08,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:08,772 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:08,786 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-11 20:25:08,972 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 20:25:08,972 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:08,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -900888339, now seen corresponding path program 7 times [2024-09-11 20:25:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841277794] [2024-09-11 20:25:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-11 20:25:10,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841277794] [2024-09-11 20:25:10,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841277794] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699632755] [2024-09-11 20:25:10,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:25:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:10,623 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 20:25:10,626 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 20:25:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,723 WARN L260 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-11 20:25:10,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-09-11 20:25:10,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 20:25:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699632755] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:14,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-09-11 20:25:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703679886] [2024-09-11 20:25:14,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:14,248 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-11 20:25:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-11 20:25:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 20:25:14,250 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 60 states, 59 states have (on average 1.694915254237288) internal successors, (100), 41 states have internal predecessors, (100), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) [2024-09-11 20:25:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:15,453 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2024-09-11 20:25:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-11 20:25:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.694915254237288) internal successors, (100), 41 states have internal predecessors, (100), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) Word has length 116 [2024-09-11 20:25:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:15,454 INFO L225 Difference]: With dead ends: 116 [2024-09-11 20:25:15,454 INFO L226 Difference]: Without dead ends: 112 [2024-09-11 20:25:15,456 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 20:25:15,456 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:15,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 804 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:25:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-11 20:25:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 68. [2024-09-11 20:25:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2024-09-11 20:25:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-09-11 20:25:15,487 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 116 [2024-09-11 20:25:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:15,487 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-09-11 20:25:15,487 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.694915254237288) internal successors, (100), 41 states have internal predecessors, (100), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) [2024-09-11 20:25:15,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-09-11 20:25:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-11 20:25:15,489 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:15,489 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:15,501 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:15,689 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 20:25:15,690 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:15,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1888205011, now seen corresponding path program 8 times [2024-09-11 20:25:15,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:15,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216130405] [2024-09-11 20:25:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:15,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:15,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-11 20:25:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216130405] [2024-09-11 20:25:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216130405] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935587757] [2024-09-11 20:25:17,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:25:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:17,629 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 20:25:17,630 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 20:25:17,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:25:17,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:17,737 WARN L260 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-11 20:25:17,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-09-11 20:25:17,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-11 20:25:21,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935587757] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:21,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:21,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-09-11 20:25:21,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170758047] [2024-09-11 20:25:21,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:21,457 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-11 20:25:21,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-11 20:25:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 20:25:21,459 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-11 20:25:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:22,880 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2024-09-11 20:25:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-11 20:25:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) Word has length 123 [2024-09-11 20:25:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:22,881 INFO L225 Difference]: With dead ends: 122 [2024-09-11 20:25:22,881 INFO L226 Difference]: Without dead ends: 118 [2024-09-11 20:25:22,882 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 20:25:22,883 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 86 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:22,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1066 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 20:25:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-11 20:25:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2024-09-11 20:25:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-09-11 20:25:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2024-09-11 20:25:22,924 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 123 [2024-09-11 20:25:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:22,924 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2024-09-11 20:25:22,924 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-11 20:25:22,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2024-09-11 20:25:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-09-11 20:25:22,926 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:22,926 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:22,942 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 20:25:23,126 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 20:25:23,127 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:23,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1048494279, now seen corresponding path program 8 times [2024-09-11 20:25:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783171305] [2024-09-11 20:25:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:24,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:25,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:25,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:25,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:25,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-11 20:25:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783171305] [2024-09-11 20:25:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783171305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714174934] [2024-09-11 20:25:25,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:25:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:25,315 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 20:25:25,316 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 20:25:25,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:25:25,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:25,433 WARN L260 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-11 20:25:25,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-09-11 20:25:25,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-11 20:25:29,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714174934] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:29,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:29,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-09-11 20:25:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542166632] [2024-09-11 20:25:29,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:29,689 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-11 20:25:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-11 20:25:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 20:25:29,691 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 67 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) [2024-09-11 20:25:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:31,194 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2024-09-11 20:25:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-11 20:25:31,195 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) Word has length 130 [2024-09-11 20:25:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:31,196 INFO L225 Difference]: With dead ends: 128 [2024-09-11 20:25:31,196 INFO L226 Difference]: Without dead ends: 124 [2024-09-11 20:25:31,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-09-11 20:25:31,200 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:31,200 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1093 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 20:25:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-11 20:25:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2024-09-11 20:25:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2024-09-11 20:25:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2024-09-11 20:25:31,244 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 130 [2024-09-11 20:25:31,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:31,244 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2024-09-11 20:25:31,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) [2024-09-11 20:25:31,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2024-09-11 20:25:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-11 20:25:31,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:31,246 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:31,263 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:31,446 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 20:25:31,447 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:31,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1461866089, now seen corresponding path program 9 times [2024-09-11 20:25:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:31,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6235110] [2024-09-11 20:25:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:32,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-11 20:25:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6235110] [2024-09-11 20:25:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6235110] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891469748] [2024-09-11 20:25:33,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:33,753 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 20:25:33,754 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 20:25:33,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-11 20:25:33,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:33,893 WARN L260 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-09-11 20:25:33,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-09-11 20:25:34,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-11 20:25:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891469748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:38,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-09-11 20:25:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174172823] [2024-09-11 20:25:38,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:38,515 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-11 20:25:38,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-11 20:25:38,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 20:25:38,517 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-11 20:25:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:40,118 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2024-09-11 20:25:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-11 20:25:40,119 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) Word has length 137 [2024-09-11 20:25:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:40,120 INFO L225 Difference]: With dead ends: 134 [2024-09-11 20:25:40,120 INFO L226 Difference]: Without dead ends: 130 [2024-09-11 20:25:40,122 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-09-11 20:25:40,122 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 206 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:40,122 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1135 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 20:25:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-11 20:25:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 77. [2024-09-11 20:25:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2024-09-11 20:25:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-09-11 20:25:40,169 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 137 [2024-09-11 20:25:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:40,169 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-09-11 20:25:40,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-11 20:25:40,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-09-11 20:25:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-11 20:25:40,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:40,170 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:40,186 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:40,371 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 20:25:40,371 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash 35662625, now seen corresponding path program 9 times [2024-09-11 20:25:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863723400] [2024-09-11 20:25:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:41,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-09-11 20:25:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863723400] [2024-09-11 20:25:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863723400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139954297] [2024-09-11 20:25:42,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:42,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:42,872 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 20:25:42,873 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 20:25:43,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-11 20:25:43,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:43,025 WARN L260 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-11 20:25:43,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-09-11 20:25:43,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-11 20:25:48,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139954297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:48,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:48,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-09-11 20:25:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282017908] [2024-09-11 20:25:48,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:48,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-11 20:25:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-11 20:25:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 20:25:48,013 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-09-11 20:25:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:49,911 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2024-09-11 20:25:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-11 20:25:49,912 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) Word has length 144 [2024-09-11 20:25:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:49,913 INFO L225 Difference]: With dead ends: 140 [2024-09-11 20:25:49,913 INFO L226 Difference]: Without dead ends: 136 [2024-09-11 20:25:49,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-09-11 20:25:49,919 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:49,919 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1166 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 20:25:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-11 20:25:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2024-09-11 20:25:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2024-09-11 20:25:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2024-09-11 20:25:49,988 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 144 [2024-09-11 20:25:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:49,988 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2024-09-11 20:25:49,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-09-11 20:25:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2024-09-11 20:25:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-11 20:25:49,990 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:49,990 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:50,007 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 20:25:50,190 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 20:25:50,190 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:50,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1044158847, now seen corresponding path program 10 times [2024-09-11 20:25:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:50,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341167766] [2024-09-11 20:25:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:50,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:50,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:50,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:51,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:52,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:53,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-09-11 20:25:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341167766] [2024-09-11 20:25:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341167766] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673153113] [2024-09-11 20:25:53,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:25:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:53,076 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 20:25:53,077 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 20:25:53,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:25:53,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:53,241 WARN L260 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-09-11 20:25:53,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-11 20:25:53,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-11 20:25:58,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673153113] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:58,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:58,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-09-11 20:25:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266055738] [2024-09-11 20:25:58,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:58,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-11 20:25:58,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-11 20:25:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 20:25:58,627 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-11 20:26:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:00,430 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2024-09-11 20:26:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 20:26:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) Word has length 151 [2024-09-11 20:26:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:00,431 INFO L225 Difference]: With dead ends: 146 [2024-09-11 20:26:00,431 INFO L226 Difference]: Without dead ends: 142 [2024-09-11 20:26:00,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-09-11 20:26:00,434 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 104 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:00,434 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1257 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 20:26:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-11 20:26:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 83. [2024-09-11 20:26:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2024-09-11 20:26:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2024-09-11 20:26:00,491 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 151 [2024-09-11 20:26:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:00,491 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2024-09-11 20:26:00,491 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-11 20:26:00,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2024-09-11 20:26:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-11 20:26:00,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:00,492 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:00,505 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 20:26:00,692 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 20:26:00,693 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:00,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1959618555, now seen corresponding path program 10 times [2024-09-11 20:26:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396914974] [2024-09-11 20:26:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:00,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:26:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:01,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:01,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:01,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:02,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-11 20:26:04,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:04,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396914974] [2024-09-11 20:26:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396914974] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787619591] [2024-09-11 20:26:04,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:26:04,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:04,197 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 20:26:04,198 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 20:26:04,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:26:04,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:04,377 WARN L260 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-09-11 20:26:04,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-09-11 20:26:04,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-09-11 20:26:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787619591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:10,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-09-11 20:26:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976206550] [2024-09-11 20:26:10,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:10,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-11 20:26:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-11 20:26:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 20:26:10,245 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2024-09-11 20:26:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:12,287 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2024-09-11 20:26:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-11 20:26:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) Word has length 158 [2024-09-11 20:26:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:12,290 INFO L225 Difference]: With dead ends: 152 [2024-09-11 20:26:12,290 INFO L226 Difference]: Without dead ends: 148 [2024-09-11 20:26:12,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-09-11 20:26:12,293 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 54 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:12,293 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1354 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 20:26:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-11 20:26:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2024-09-11 20:26:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 24 states have call predecessors, (25), 3 states have call successors, (25) [2024-09-11 20:26:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2024-09-11 20:26:12,356 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 158 [2024-09-11 20:26:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:12,356 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2024-09-11 20:26:12,356 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2024-09-11 20:26:12,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2024-09-11 20:26:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-11 20:26:12,358 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:12,358 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:12,373 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 20:26:12,558 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 20:26:12,559 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:12,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash -863500821, now seen corresponding path program 11 times [2024-09-11 20:26:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980132519] [2024-09-11 20:26:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:26:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:13,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:13,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:13,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:13,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:14,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:15,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-09-11 20:26:16,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980132519] [2024-09-11 20:26:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980132519] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41369232] [2024-09-11 20:26:16,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:26:16,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:16,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:16,028 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 20:26:16,029 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 20:26:16,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-11 20:26:16,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:16,232 WARN L260 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-11 20:26:16,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-09-11 20:26:16,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-11 20:26:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41369232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:22,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2024-09-11 20:26:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311012592] [2024-09-11 20:26:22,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:22,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-11 20:26:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-11 20:26:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 20:26:22,707 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2024-09-11 20:26:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:24,947 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2024-09-11 20:26:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-11 20:26:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) Word has length 165 [2024-09-11 20:26:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:24,949 INFO L225 Difference]: With dead ends: 158 [2024-09-11 20:26:24,949 INFO L226 Difference]: Without dead ends: 154 [2024-09-11 20:26:24,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1012, Invalid=14738, Unknown=0, NotChecked=0, Total=15750 [2024-09-11 20:26:24,952 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 180 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:24,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1488 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 20:26:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-09-11 20:26:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 89. [2024-09-11 20:26:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2024-09-11 20:26:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2024-09-11 20:26:25,071 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 165 [2024-09-11 20:26:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:25,072 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2024-09-11 20:26:25,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2024-09-11 20:26:25,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2024-09-11 20:26:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-11 20:26:25,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:25,074 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:25,090 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 20:26:25,274 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 20:26:25,274 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:25,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1194715307, now seen corresponding path program 11 times [2024-09-11 20:26:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767773873] [2024-09-11 20:26:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:25,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:25,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:26:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:25,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:26,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:26,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:26,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:26,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:26,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:27,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:28,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-11 20:26:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767773873] [2024-09-11 20:26:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767773873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821134002] [2024-09-11 20:26:29,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:26:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:29,019 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 20:26:29,020 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 20:26:29,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-11 20:26:29,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:29,247 WARN L260 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-09-11 20:26:29,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-11 20:26:29,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-11 20:26:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821134002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:36,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:36,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-09-11 20:26:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160120892] [2024-09-11 20:26:36,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:36,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-11 20:26:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-11 20:26:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-09-11 20:26:36,144 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2024-09-11 20:26:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:38,712 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2024-09-11 20:26:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-11 20:26:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) Word has length 172 [2024-09-11 20:26:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:38,714 INFO L225 Difference]: With dead ends: 164 [2024-09-11 20:26:38,714 INFO L226 Difference]: Without dead ends: 160 [2024-09-11 20:26:38,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-09-11 20:26:38,717 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 50 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:38,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1684 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 20:26:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-11 20:26:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 92. [2024-09-11 20:26:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2024-09-11 20:26:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2024-09-11 20:26:38,816 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 172 [2024-09-11 20:26:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:38,816 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2024-09-11 20:26:38,816 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2024-09-11 20:26:38,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2024-09-11 20:26:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-11 20:26:38,817 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:38,817 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:38,830 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-11 20:26:39,017 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 20:26:39,018 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:39,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash 892743637, now seen corresponding path program 12 times [2024-09-11 20:26:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:39,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128010902] [2024-09-11 20:26:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:39,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:26:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:39,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:39,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:40,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:40,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:40,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:40,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:41,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:42,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:43,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-11 20:26:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128010902] [2024-09-11 20:26:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128010902] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931872500] [2024-09-11 20:26:43,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:26:43,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:43,140 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 20:26:43,141 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 20:26:43,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-11 20:26:43,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:43,391 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-09-11 20:26:43,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-09-11 20:26:43,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-11 20:26:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931872500] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:50,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2024-09-11 20:26:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326546439] [2024-09-11 20:26:50,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:50,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-11 20:26:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-11 20:26:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2024-09-11 20:26:50,825 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2024-09-11 20:26:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:53,312 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-09-11 20:26:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-11 20:26:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) Word has length 179 [2024-09-11 20:26:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:53,313 INFO L225 Difference]: With dead ends: 170 [2024-09-11 20:26:53,313 INFO L226 Difference]: Without dead ends: 166 [2024-09-11 20:26:53,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1148, Invalid=17212, Unknown=0, NotChecked=0, Total=18360 [2024-09-11 20:26:53,315 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 210 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:53,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1594 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2879 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 20:26:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-09-11 20:26:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 95. [2024-09-11 20:26:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2024-09-11 20:26:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2024-09-11 20:26:53,399 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 179 [2024-09-11 20:26:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:53,399 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2024-09-11 20:26:53,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2024-09-11 20:26:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2024-09-11 20:26:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-11 20:26:53,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:53,400 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:53,416 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 20:26:53,600 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 20:26:53,601 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:53,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1291966767, now seen corresponding path program 12 times [2024-09-11 20:26:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255580629] [2024-09-11 20:26:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:53,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:26:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:54,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:54,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:54,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:55,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:55,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:55,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:55,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:56,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-11 20:26:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255580629] [2024-09-11 20:26:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255580629] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888064958] [2024-09-11 20:26:58,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:26:58,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:58,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:58,318 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 20:26:58,319 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 20:26:58,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-11 20:26:58,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:58,594 WARN L260 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-09-11 20:26:58,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-11 20:26:58,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-11 20:27:06,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888064958] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:06,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-09-11 20:27:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645370409] [2024-09-11 20:27:06,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:06,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-11 20:27:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-11 20:27:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 20:27:06,619 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 90 states, 89 states have (on average 1.6853932584269662) internal successors, (150), 61 states have internal predecessors, (150), 29 states have call successors, (29), 1 states have call predecessors, (29), 27 states have return successors, (53), 29 states have call predecessors, (53), 29 states have call successors, (53) [2024-09-11 20:27:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:09,570 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2024-09-11 20:27:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-11 20:27:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.6853932584269662) internal successors, (150), 61 states have internal predecessors, (150), 29 states have call successors, (29), 1 states have call predecessors, (29), 27 states have return successors, (53), 29 states have call predecessors, (53), 29 states have call successors, (53) Word has length 186 [2024-09-11 20:27:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:09,572 INFO L225 Difference]: With dead ends: 176 [2024-09-11 20:27:09,572 INFO L226 Difference]: Without dead ends: 172 [2024-09-11 20:27:09,574 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-09-11 20:27:09,574 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 66 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:09,575 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1789 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 20:27:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-11 20:27:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 98. [2024-09-11 20:27:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2024-09-11 20:27:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2024-09-11 20:27:09,667 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 186 [2024-09-11 20:27:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:09,668 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2024-09-11 20:27:09,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.6853932584269662) internal successors, (150), 61 states have internal predecessors, (150), 29 states have call successors, (29), 1 states have call predecessors, (29), 27 states have return successors, (53), 29 states have call predecessors, (53), 29 states have call successors, (53) [2024-09-11 20:27:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2024-09-11 20:27:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-09-11 20:27:09,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:09,669 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:09,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:09,869 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 20:27:09,869 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:09,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -880769985, now seen corresponding path program 13 times [2024-09-11 20:27:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913909880] [2024-09-11 20:27:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:10,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:27:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:10,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:10,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:13,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-09-11 20:27:14,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:27:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913909880] [2024-09-11 20:27:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913909880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:27:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465639435] [2024-09-11 20:27:14,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:27:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:27:14,892 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 20:27:14,893 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 20:27:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:15,190 WARN L260 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-09-11 20:27:15,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-09-11 20:27:15,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-11 20:27:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465639435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:23,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:23,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2024-09-11 20:27:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465020264] [2024-09-11 20:27:23,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:23,937 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-11 20:27:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-11 20:27:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2024-09-11 20:27:23,938 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2024-09-11 20:27:26,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:26,862 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2024-09-11 20:27:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-11 20:27:26,863 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) Word has length 193 [2024-09-11 20:27:26,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:26,864 INFO L225 Difference]: With dead ends: 182 [2024-09-11 20:27:26,864 INFO L226 Difference]: Without dead ends: 178 [2024-09-11 20:27:26,865 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1292, Invalid=19878, Unknown=0, NotChecked=0, Total=21170 [2024-09-11 20:27:26,865 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 310 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 3275 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:26,866 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1870 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3275 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 20:27:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-11 20:27:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 101. [2024-09-11 20:27:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2024-09-11 20:27:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-09-11 20:27:26,967 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 193 [2024-09-11 20:27:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:26,967 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-09-11 20:27:26,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2024-09-11 20:27:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-09-11 20:27:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-09-11 20:27:26,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:26,969 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:26,984 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:27,169 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 20:27:27,170 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:27,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 654855561, now seen corresponding path program 13 times [2024-09-11 20:27:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391665023] [2024-09-11 20:27:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:27,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:27:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:27,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:28,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:28,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:28,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:29,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:29,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:29,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:29,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:30,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:30,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:30,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:30,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-09-11 20:27:32,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:27:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391665023] [2024-09-11 20:27:32,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391665023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:27:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361978578] [2024-09-11 20:27:32,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:27:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:27:32,761 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 20:27:32,761 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 20:27:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:33,083 WARN L260 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-11 20:27:33,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-11 20:27:33,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-11 20:27:42,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361978578] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:42,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:42,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-09-11 20:27:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706144059] [2024-09-11 20:27:42,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:42,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-11 20:27:42,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-11 20:27:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 20:27:42,251 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2024-09-11 20:27:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:45,625 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2024-09-11 20:27:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-11 20:27:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) Word has length 200 [2024-09-11 20:27:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:45,627 INFO L225 Difference]: With dead ends: 188 [2024-09-11 20:27:45,627 INFO L226 Difference]: Without dead ends: 184 [2024-09-11 20:27:45,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-09-11 20:27:45,630 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 4287 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:45,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2188 Invalid, 4322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4287 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-11 20:27:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-11 20:27:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 104. [2024-09-11 20:27:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 30 states have call predecessors, (31), 3 states have call successors, (31) [2024-09-11 20:27:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2024-09-11 20:27:45,794 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 200 [2024-09-11 20:27:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:45,794 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2024-09-11 20:27:45,795 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2024-09-11 20:27:45,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2024-09-11 20:27:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-11 20:27:45,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:45,796 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:45,814 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:45,997 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 20:27:45,998 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:45,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 750887721, now seen corresponding path program 14 times [2024-09-11 20:27:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171965596] [2024-09-11 20:27:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:46,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:27:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:46,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:47,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:47,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:47,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:48,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:48,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:48,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:49,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:49,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:49,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:49,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:49,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:50,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-09-11 20:27:51,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:27:51,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171965596] [2024-09-11 20:27:51,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171965596] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:27:51,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922946306] [2024-09-11 20:27:51,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:27:51,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:51,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:27:51,990 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 20:27:51,991 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 20:27:52,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:27:52,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:27:52,347 WARN L260 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-11 20:27:52,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-09-11 20:27:52,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:28:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-09-11 20:28:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922946306] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:28:02,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:28:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2024-09-11 20:28:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719077574] [2024-09-11 20:28:02,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:28:02,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-11 20:28:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:28:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-11 20:28:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 20:28:02,287 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2024-09-11 20:28:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:28:05,795 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2024-09-11 20:28:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-11 20:28:05,796 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) Word has length 207 [2024-09-11 20:28:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:28:05,798 INFO L225 Difference]: With dead ends: 194 [2024-09-11 20:28:05,798 INFO L226 Difference]: Without dead ends: 190 [2024-09-11 20:28:05,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1444, Invalid=22736, Unknown=0, NotChecked=0, Total=24180 [2024-09-11 20:28:05,801 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 172 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 4381 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 4455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 4381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:28:05,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 2482 Invalid, 4455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 4381 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-11 20:28:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-11 20:28:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 107. [2024-09-11 20:28:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2024-09-11 20:28:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2024-09-11 20:28:05,923 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 207 [2024-09-11 20:28:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:28:05,923 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2024-09-11 20:28:05,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2024-09-11 20:28:05,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2024-09-11 20:28:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-09-11 20:28:05,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:28:05,924 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:28:05,938 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-11 20:28:06,124 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 20:28:06,125 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:28:06,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1293489251, now seen corresponding path program 14 times [2024-09-11 20:28:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:28:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141214784] [2024-09-11 20:28:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:28:06,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:28:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:06,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:28:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:07,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:07,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:07,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:08,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:08,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:08,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:09,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:09,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:09,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:09,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:10,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:10,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:10,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:10,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:10,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:11,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-09-11 20:28:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:28:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141214784] [2024-09-11 20:28:12,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141214784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:28:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919659741] [2024-09-11 20:28:12,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:28:12,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:28:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:28:12,657 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 20:28:12,657 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 20:28:13,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:28:13,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:28:13,037 WARN L260 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 248 conjuncts are in the unsatisfiable core [2024-09-11 20:28:13,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:28:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2024-09-11 20:28:13,388 INFO L327 TraceCheckSpWp]: Computing backward predicates...