./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_5.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/loop-simple/nested_5.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 3d0f32d2f39934bb8fd732fa206acfa5d2fb4cacaee37919c0e4326d55891c86 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:36:15,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:36:15,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:36:15,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:36:15,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:36:15,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:36:15,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:36:15,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:36:15,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:36:15,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:36:15,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:36:15,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:36:15,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:36:15,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:36:15,336 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:36:15,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:36:15,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:36:15,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:36:15,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:36:15,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:36:15,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:36:15,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:36:15,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:36:15,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:36:15,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:36:15,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:36:15,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:36:15,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:36:15,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:36:15,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:36:15,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:36:15,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:36:15,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:36:15,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:36:15,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:36:15,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:36:15,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:36:15,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:36:15,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:36:15,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:36:15,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:36:15,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:36:15,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d0f32d2f39934bb8fd732fa206acfa5d2fb4cacaee37919c0e4326d55891c86 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:36:15,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:36:15,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:36:15,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:36:15,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:36:15,627 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:36:15,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-simple/nested_5.c [2024-09-11 19:36:17,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:36:17,283 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:36:17,284 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_5.c [2024-09-11 19:36:17,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d5a89ff5e/6243d47094454848931db761c2ac6b56/FLAG12b69242f [2024-09-11 19:36:17,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d5a89ff5e/6243d47094454848931db761c2ac6b56 [2024-09-11 19:36:17,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:36:17,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:36:17,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:36:17,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:36:17,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:36:17,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d0833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17, skipping insertion in model container [2024-09-11 19:36:17,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:36:17,519 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/loop-simple/nested_5.c[899,912] [2024-09-11 19:36:17,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:36:17,537 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:36:17,553 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/loop-simple/nested_5.c[899,912] [2024-09-11 19:36:17,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:36:17,569 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:36:17,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17 WrapperNode [2024-09-11 19:36:17,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:36:17,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:36:17,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:36:17,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:36:17,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,601 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2024-09-11 19:36:17,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:36:17,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:36:17,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:36:17,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:36:17,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,623 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 19:36:17,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:36:17,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:36:17,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:36:17,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:36:17,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (1/1) ... [2024-09-11 19:36:17,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:36:17,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:17,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 19:36:17,680 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 19:36:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:36:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:36:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:36:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:36:17,784 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:36:17,786 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:36:17,926 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-11 19:36:17,927 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:36:17,959 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:36:17,959 INFO L318 CfgBuilder]: Removed 5 assume(true) statements. [2024-09-11 19:36:17,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:36:17 BoogieIcfgContainer [2024-09-11 19:36:17,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:36:17,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:36:17,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:36:17,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:36:17,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:36:17" (1/3) ... [2024-09-11 19:36:17,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c82565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:36:17, skipping insertion in model container [2024-09-11 19:36:17,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:36:17" (2/3) ... [2024-09-11 19:36:17,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c82565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:36:17, skipping insertion in model container [2024-09-11 19:36:17,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:36:17" (3/3) ... [2024-09-11 19:36:17,971 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_5.c [2024-09-11 19:36:17,987 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:36:17,987 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:36:18,048 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:36:18,058 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;@314681df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:36:18,059 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:36:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-11 19:36:18,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,069 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-11 19:36:18,070 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 3257020, now seen corresponding path program 1 times [2024-09-11 19:36:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422814727] [2024-09-11 19:36:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422814727] [2024-09-11 19:36:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422814727] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:36:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:36:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:36:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503275227] [2024-09-11 19:36:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:36:18,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:36:18,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:36:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,328 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:18,365 INFO L93 Difference]: Finished difference Result 38 states and 68 transitions. [2024-09-11 19:36:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:36:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-11 19:36:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:18,379 INFO L225 Difference]: With dead ends: 38 [2024-09-11 19:36:18,380 INFO L226 Difference]: Without dead ends: 22 [2024-09-11 19:36:18,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,385 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:18,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-11 19:36:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2024-09-11 19:36:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2024-09-11 19:36:18,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 4 [2024-09-11 19:36:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:18,413 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2024-09-11 19:36:18,413 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2024-09-11 19:36:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:36:18,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,415 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:18,415 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:36:18,416 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1743481472, now seen corresponding path program 1 times [2024-09-11 19:36:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445129033] [2024-09-11 19:36:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445129033] [2024-09-11 19:36:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445129033] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:36:18,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:36:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:36:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481167622] [2024-09-11 19:36:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:36:18,472 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:36:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:36:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,474 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:18,504 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2024-09-11 19:36:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:36:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-11 19:36:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:18,506 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:36:18,506 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:36:18,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,508 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:18,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:36:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2024-09-11 19:36:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-09-11 19:36:18,515 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2024-09-11 19:36:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:18,515 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-09-11 19:36:18,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-09-11 19:36:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:36:18,518 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,518 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:18,518 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:36:18,519 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1911061864, now seen corresponding path program 1 times [2024-09-11 19:36:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75811479] [2024-09-11 19:36:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75811479] [2024-09-11 19:36:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75811479] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:36:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:36:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:36:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058287269] [2024-09-11 19:36:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:36:18,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:36:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:36:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,607 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:18,637 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-09-11 19:36:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:36:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-09-11 19:36:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:18,638 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:36:18,638 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 19:36:18,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,640 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:18,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 19:36:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2024-09-11 19:36:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-09-11 19:36:18,645 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-09-11 19:36:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:18,646 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-09-11 19:36:18,646 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-09-11 19:36:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:36:18,647 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,647 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:18,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:36:18,648 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash 447814724, now seen corresponding path program 1 times [2024-09-11 19:36:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923414800] [2024-09-11 19:36:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923414800] [2024-09-11 19:36:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923414800] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:36:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:36:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:36:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603492026] [2024-09-11 19:36:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:36:18,743 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:36:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:36:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,745 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:18,768 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-09-11 19:36:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:36:18,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-09-11 19:36:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:18,770 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:36:18,770 INFO L226 Difference]: Without dead ends: 19 [2024-09-11 19:36:18,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,772 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:18,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-11 19:36:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-09-11 19:36:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-09-11 19:36:18,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 13 [2024-09-11 19:36:18,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:18,778 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-09-11 19:36:18,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-09-11 19:36:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:36:18,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,780 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:18,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 19:36:18,780 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1206230460, now seen corresponding path program 1 times [2024-09-11 19:36:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647274743] [2024-09-11 19:36:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647274743] [2024-09-11 19:36:18,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647274743] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:36:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:36:18,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:36:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217069257] [2024-09-11 19:36:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:36:18,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:36:18,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:36:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,874 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:18,889 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-09-11 19:36:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:36:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-09-11 19:36:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:18,890 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:36:18,890 INFO L226 Difference]: Without dead ends: 18 [2024-09-11 19:36:18,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:36:18,892 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:18,893 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-11 19:36:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-11 19:36:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-09-11 19:36:18,900 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 16 [2024-09-11 19:36:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:18,900 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-09-11 19:36:18,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:18,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-09-11 19:36:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:36:18,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:18,902 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 19:36:18,902 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-11 19:36:18,902 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1779175442, now seen corresponding path program 1 times [2024-09-11 19:36:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:18,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715782773] [2024-09-11 19:36:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715782773] [2024-09-11 19:36:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715782773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523675632] [2024-09-11 19:36:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:19,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:19,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:36:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:19,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-11 19:36:19,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:19,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523675632] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:19,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:19,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-11 19:36:19,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548272909] [2024-09-11 19:36:19,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:19,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:36:19,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:36:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:36:19,142 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:19,169 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2024-09-11 19:36:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:36:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-11 19:36:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:19,170 INFO L225 Difference]: With dead ends: 37 [2024-09-11 19:36:19,171 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:36:19,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:36:19,172 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:19,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:36:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-11 19:36:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-11 19:36:19,177 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2024-09-11 19:36:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:19,177 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-11 19:36:19,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-11 19:36:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:36:19,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:19,178 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:19,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:36:19,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:36:19,380 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:19,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2113824196, now seen corresponding path program 2 times [2024-09-11 19:36:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:19,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206476508] [2024-09-11 19:36:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:36:19,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:19,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206476508] [2024-09-11 19:36:19,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206476508] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283584974] [2024-09-11 19:36:19,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:36:19,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:19,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:19,440 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:36:19,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:36:19,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:19,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:36:19,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:19,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283584974] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:19,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2024-09-11 19:36:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381533919] [2024-09-11 19:36:19,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:19,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:36:19,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:36:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:36:19,619 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:19,791 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2024-09-11 19:36:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 19:36:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-09-11 19:36:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:19,792 INFO L225 Difference]: With dead ends: 59 [2024-09-11 19:36:19,793 INFO L226 Difference]: Without dead ends: 40 [2024-09-11 19:36:19,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:36:19,794 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:19,794 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-11 19:36:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2024-09-11 19:36:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-09-11 19:36:19,809 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 20 [2024-09-11 19:36:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:19,810 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-09-11 19:36:19,810 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:19,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-09-11 19:36:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:36:19,811 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:19,811 INFO L216 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:19,823 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:20,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 19:36:20,012 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:20,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -645610428, now seen corresponding path program 3 times [2024-09-11 19:36:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072624593] [2024-09-11 19:36:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-11 19:36:20,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:20,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072624593] [2024-09-11 19:36:20,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072624593] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155111022] [2024-09-11 19:36:20,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:20,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:20,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:20,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:20,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:36:20,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:36:20,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:20,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-11 19:36:20,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-09-11 19:36:20,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-09-11 19:36:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155111022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:20,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:20,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-09-11 19:36:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150901573] [2024-09-11 19:36:20,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:20,277 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:36:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:36:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:36:20,278 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:20,438 INFO L93 Difference]: Finished difference Result 307 states and 363 transitions. [2024-09-11 19:36:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:36:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-09-11 19:36:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:20,442 INFO L225 Difference]: With dead ends: 307 [2024-09-11 19:36:20,442 INFO L226 Difference]: Without dead ends: 277 [2024-09-11 19:36:20,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:36:20,443 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:20,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 53 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-11 19:36:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 197. [2024-09-11 19:36:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.1683673469387754) internal successors, (229), 196 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2024-09-11 19:36:20,483 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 31 [2024-09-11 19:36:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:20,484 INFO L474 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2024-09-11 19:36:20,484 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:20,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2024-09-11 19:36:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-11 19:36:20,489 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:20,489 INFO L216 NwaCegarLoop]: trace histogram [96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-09-11 19:36:20,505 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:36:20,693 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-11 19:36:20,694 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:20,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash 659829612, now seen corresponding path program 4 times [2024-09-11 19:36:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367287238] [2024-09-11 19:36:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 2566 proven. 1 refuted. 0 times theorem prover too weak. 4189 trivial. 0 not checked. [2024-09-11 19:36:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367287238] [2024-09-11 19:36:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367287238] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130779248] [2024-09-11 19:36:20,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:20,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:20,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:20,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:36:21,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:21,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:21,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:36:21,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 1485 proven. 53 refuted. 0 times theorem prover too weak. 5218 trivial. 0 not checked. [2024-09-11 19:36:21,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 1485 proven. 53 refuted. 0 times theorem prover too weak. 5218 trivial. 0 not checked. [2024-09-11 19:36:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130779248] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:21,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-09-11 19:36:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407986865] [2024-09-11 19:36:21,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:21,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:36:21,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:36:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:36:21,215 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:21,639 INFO L93 Difference]: Finished difference Result 1611 states and 1927 transitions. [2024-09-11 19:36:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 19:36:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-09-11 19:36:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:21,652 INFO L225 Difference]: With dead ends: 1611 [2024-09-11 19:36:21,652 INFO L226 Difference]: Without dead ends: 1417 [2024-09-11 19:36:21,654 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:36:21,655 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:21,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 53 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-09-11 19:36:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 953. [2024-09-11 19:36:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 1.1313025210084033) internal successors, (1077), 952 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1077 transitions. [2024-09-11 19:36:21,866 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1077 transitions. Word has length 196 [2024-09-11 19:36:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:21,867 INFO L474 AbstractCegarLoop]: Abstraction has 953 states and 1077 transitions. [2024-09-11 19:36:21,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:21,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1077 transitions. [2024-09-11 19:36:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2024-09-11 19:36:21,897 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:21,897 INFO L216 NwaCegarLoop]: trace histogram [576, 96, 96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1] [2024-09-11 19:36:21,915 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:22,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:22,102 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:22,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1491595196, now seen corresponding path program 5 times [2024-09-11 19:36:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826706614] [2024-09-11 19:36:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 236738 backedges. 51878 proven. 1853 refuted. 0 times theorem prover too weak. 183007 trivial. 0 not checked. [2024-09-11 19:36:23,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826706614] [2024-09-11 19:36:23,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826706614] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:23,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059887827] [2024-09-11 19:36:23,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:36:23,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:23,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:23,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:23,149 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:36:23,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2024-09-11 19:36:23,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:23,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:36:23,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 236738 backedges. 126006 proven. 1853 refuted. 0 times theorem prover too weak. 108879 trivial. 0 not checked. [2024-09-11 19:36:23,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 236738 backedges. 126006 proven. 1853 refuted. 0 times theorem prover too weak. 108879 trivial. 0 not checked. [2024-09-11 19:36:23,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059887827] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:23,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-09-11 19:36:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560908020] [2024-09-11 19:36:23,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:23,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:36:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:36:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:36:23,844 INFO L87 Difference]: Start difference. First operand 953 states and 1077 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:24,245 INFO L93 Difference]: Finished difference Result 3612 states and 4101 transitions. [2024-09-11 19:36:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:36:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 952 [2024-09-11 19:36:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:24,258 INFO L225 Difference]: With dead ends: 3612 [2024-09-11 19:36:24,258 INFO L226 Difference]: Without dead ends: 2777 [2024-09-11 19:36:24,262 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1907 GetRequests, 1900 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:36:24,263 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:24,263 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 49 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2024-09-11 19:36:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2777. [2024-09-11 19:36:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 1.1257204610951008) internal successors, (3125), 2776 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3125 transitions. [2024-09-11 19:36:24,589 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3125 transitions. Word has length 952 [2024-09-11 19:36:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:24,591 INFO L474 AbstractCegarLoop]: Abstraction has 2777 states and 3125 transitions. [2024-09-11 19:36:24,591 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:24,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3125 transitions. [2024-09-11 19:36:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2777 [2024-09-11 19:36:24,710 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:24,711 INFO L216 NwaCegarLoop]: trace histogram [1728, 288, 288, 288, 48, 48, 48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1] [2024-09-11 19:36:24,728 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:36:24,912 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-11 19:36:24,912 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1152366524, now seen corresponding path program 6 times [2024-09-11 19:36:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499623478] [2024-09-11 19:36:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2131506 backedges. 799831 proven. 66653 refuted. 0 times theorem prover too weak. 1265022 trivial. 0 not checked. [2024-09-11 19:36:29,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:29,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499623478] [2024-09-11 19:36:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499623478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:29,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487488349] [2024-09-11 19:36:29,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:36:29,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:29,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:29,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:36:31,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 465 check-sat command(s) [2024-09-11 19:36:31,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:32,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:36:32,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2131506 backedges. 799834 proven. 66653 refuted. 0 times theorem prover too weak. 1265019 trivial. 0 not checked. [2024-09-11 19:36:32,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2131506 backedges. 799834 proven. 66653 refuted. 0 times theorem prover too weak. 1265019 trivial. 0 not checked. [2024-09-11 19:36:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487488349] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:33,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-09-11 19:36:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749869494] [2024-09-11 19:36:33,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:33,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:36:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:36:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:36:33,784 INFO L87 Difference]: Start difference. First operand 2777 states and 3125 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:34,658 INFO L93 Difference]: Finished difference Result 10381 states and 11694 transitions. [2024-09-11 19:36:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:36:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2776 [2024-09-11 19:36:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:34,702 INFO L225 Difference]: With dead ends: 10381 [2024-09-11 19:36:34,702 INFO L226 Difference]: Without dead ends: 8297 [2024-09-11 19:36:34,711 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5555 GetRequests, 5548 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:36:34,711 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:34,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:36:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2024-09-11 19:36:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8297. [2024-09-11 19:36:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8297 states, 8296 states have (on average 1.125) internal successors, (9333), 8296 states have internal predecessors, (9333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 9333 transitions. [2024-09-11 19:36:35,517 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 9333 transitions. Word has length 2776 [2024-09-11 19:36:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:35,519 INFO L474 AbstractCegarLoop]: Abstraction has 8297 states and 9333 transitions. [2024-09-11 19:36:35,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:36:35,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 9333 transitions. [2024-09-11 19:36:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8297 [2024-09-11 19:36:35,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:35,787 INFO L216 NwaCegarLoop]: trace histogram [5184, 864, 864, 864, 144, 144, 144, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1] [2024-09-11 19:36:35,806 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:35,987 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:36:35,988 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:35,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 679025596, now seen corresponding path program 7 times [2024-09-11 19:36:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329734331] [2024-09-11 19:36:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19191466 backedges. 0 proven. 14396710 refuted. 0 times theorem prover too weak. 4794756 trivial. 0 not checked. [2024-09-11 19:37:13,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:13,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329734331] [2024-09-11 19:37:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329734331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385448473] [2024-09-11 19:37:13,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:37:13,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:13,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:13,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:13,134 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:37:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:16,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 21802 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:37:17,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 19191466 backedges. 0 proven. 14396710 refuted. 0 times theorem prover too weak. 4794756 trivial. 0 not checked. [2024-09-11 19:37:25,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19191466 backedges. 0 proven. 14396710 refuted. 0 times theorem prover too weak. 4794756 trivial. 0 not checked. [2024-09-11 19:37:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385448473] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:32,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:32,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-09-11 19:37:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187605587] [2024-09-11 19:37:32,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:32,542 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:37:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:37:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:37:32,543 INFO L87 Difference]: Start difference. First operand 8297 states and 9333 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:37:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:33,465 INFO L93 Difference]: Finished difference Result 12446 states and 14001 transitions. [2024-09-11 19:37:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:37:33,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8296 [2024-09-11 19:37:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:33,533 INFO L225 Difference]: With dead ends: 12446 [2024-09-11 19:37:33,533 INFO L226 Difference]: Without dead ends: 12443 [2024-09-11 19:37:33,539 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16596 GetRequests, 16585 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:37:33,540 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:33,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:37:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12443 states. [2024-09-11 19:37:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12443 to 12443. [2024-09-11 19:37:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12443 states, 12442 states have (on average 1.1249799067674007) internal successors, (13997), 12442 states have internal predecessors, (13997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:37:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12443 states to 12443 states and 13997 transitions. [2024-09-11 19:37:34,680 INFO L78 Accepts]: Start accepts. Automaton has 12443 states and 13997 transitions. Word has length 8296 [2024-09-11 19:37:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:34,688 INFO L474 AbstractCegarLoop]: Abstraction has 12443 states and 13997 transitions. [2024-09-11 19:37:34,688 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:37:34,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 12443 states and 13997 transitions. [2024-09-11 19:37:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12443 [2024-09-11 19:37:35,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:35,323 INFO L216 NwaCegarLoop]: trace histogram [7776, 1296, 1296, 1296, 216, 216, 216, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1] [2024-09-11 19:37:35,369 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:35,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:35,524 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:35,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1231396924, now seen corresponding path program 8 times [2024-09-11 19:37:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933667386] [2024-09-11 19:37:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:35,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat