./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd01-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --procedureinliner.inline.calls.to.implemented.procedures NEVER --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 [2024-09-12 16:26:06,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:26:06,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:26:06,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:26:06,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:26:06,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:26:06,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:26:06,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:26:06,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:26:06,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:26:06,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:26:06,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:26:06,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:26:06,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:26:06,980 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:26:06,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:26:06,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:26:06,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:26:06,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:26:06,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:26:06,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:26:06,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:26:06,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:26:06,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:26:06,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:26:06,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:26:06,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:26:06,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:26:06,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:26:06,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:26:06,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:26:06,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:26:06,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:06,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:26:06,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:26:06,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:26:06,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:26:06,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:26:06,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:26:06,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:26:06,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:26:06,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:26:06,989 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:26:07,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:26:07,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:26:07,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:26:07,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:26:07,461 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:26:07,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-12 16:26:08,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:26:09,039 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:26:09,040 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-12 16:26:09,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/67c0ecfcb/e2e55ffb81e7408a9d3d20a14f629c86/FLAGd7e9af4d3 [2024-09-12 16:26:09,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/67c0ecfcb/e2e55ffb81e7408a9d3d20a14f629c86 [2024-09-12 16:26:09,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:26:09,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:26:09,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:09,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:26:09,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:26:09,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9b4001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09, skipping insertion in model container [2024-09-12 16:26:09,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:26:09,226 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-12 16:26:09,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:09,237 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:26:09,250 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-12 16:26:09,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:09,264 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:26:09,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09 WrapperNode [2024-09-12 16:26:09,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:09,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:09,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:26:09,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:26:09,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,280 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:26:09,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:09,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:26:09,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:26:09,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:26:09,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,306 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]. [2024-09-12 16:26:09,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:26:09,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:26:09,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:26:09,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:26:09,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (1/1) ... [2024-09-12 16:26:09,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:09,350 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) [2024-09-12 16:26:09,360 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 [2024-09-12 16:26:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:26:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-09-12 16:26:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-09-12 16:26:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:26:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:26:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:26:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:26:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:26:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-09-12 16:26:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-09-12 16:26:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:26:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:26:09,441 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:26:09,443 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:26:09,576 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-12 16:26:09,576 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:26:09,608 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:26:09,608 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:26:09,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:09 BoogieIcfgContainer [2024-09-12 16:26:09,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:26:09,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:26:09,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:26:09,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:26:09,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:26:09" (1/3) ... [2024-09-12 16:26:09,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba7a981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:09, skipping insertion in model container [2024-09-12 16:26:09,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:09" (2/3) ... [2024-09-12 16:26:09,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba7a981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:09, skipping insertion in model container [2024-09-12 16:26:09,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:09" (3/3) ... [2024-09-12 16:26:09,617 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-09-12 16:26:09,632 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:26:09,632 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:26:09,714 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:26:09,720 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;@5060a3da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:26:09,720 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:26:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 16:26:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 16:26:09,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:09,728 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:09,728 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:09,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1991504062, now seen corresponding path program 1 times [2024-09-12 16:26:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:09,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044292950] [2024-09-12 16:26:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044292950] [2024-09-12 16:26:10,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044292950] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:10,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 16:26:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658348774] [2024-09-12 16:26:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:10,250 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 16:26:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 16:26:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:10,268 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:26:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:10,341 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-09-12 16:26:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 16:26:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-12 16:26:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:10,348 INFO L225 Difference]: With dead ends: 41 [2024-09-12 16:26:10,348 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 16:26:10,350 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:10,352 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:10,353 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 16:26:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-12 16:26:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 16:26:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-12 16:26:10,377 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2024-09-12 16:26:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:10,378 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-12 16:26:10,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:26:10,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-12 16:26:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 16:26:10,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:10,380 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:10,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:26:10,380 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:10,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1940222656, now seen corresponding path program 1 times [2024-09-12 16:26:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394898055] [2024-09-12 16:26:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394898055] [2024-09-12 16:26:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394898055] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:10,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 16:26:10,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33531257] [2024-09-12 16:26:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:10,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 16:26:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 16:26:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:10,600 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:26:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:10,657 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-12 16:26:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 16:26:10,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-12 16:26:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:10,658 INFO L225 Difference]: With dead ends: 33 [2024-09-12 16:26:10,658 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 16:26:10,659 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:10,659 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:10,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 16:26:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-12 16:26:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 16:26:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-12 16:26:10,670 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2024-09-12 16:26:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:10,671 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-12 16:26:10,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:26:10,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-12 16:26:10,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 16:26:10,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:10,682 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:10,682 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:26:10,682 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:10,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2009952378, now seen corresponding path program 1 times [2024-09-12 16:26:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461204918] [2024-09-12 16:26:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461204918] [2024-09-12 16:26:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461204918] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:10,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379322347] [2024-09-12 16:26:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:10,757 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:10,758 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:26:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:10,784 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-12 16:26:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:26:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 16:26:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:10,785 INFO L225 Difference]: With dead ends: 41 [2024-09-12 16:26:10,786 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 16:26:10,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:10,787 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:10,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 16:26:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-12 16:26:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 16:26:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-12 16:26:10,792 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2024-09-12 16:26:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:10,792 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-12 16:26:10,793 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:26:10,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-12 16:26:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:26:10,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:10,794 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:10,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 16:26:10,794 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:10,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash 380134900, now seen corresponding path program 1 times [2024-09-12 16:26:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774147740] [2024-09-12 16:26:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:10,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774147740] [2024-09-12 16:26:10,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774147740] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:10,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 16:26:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018812626] [2024-09-12 16:26:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:10,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 16:26:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 16:26:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-12 16:26:10,999 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:26:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:11,076 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-09-12 16:26:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:26:11,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-12 16:26:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:11,077 INFO L225 Difference]: With dead ends: 36 [2024-09-12 16:26:11,077 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 16:26:11,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-12 16:26:11,078 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:11,079 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:11,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 16:26:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-12 16:26:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 16:26:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-12 16:26:11,084 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2024-09-12 16:26:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:11,084 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-12 16:26:11,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:26:11,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-12 16:26:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 16:26:11,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:11,085 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:11,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 16:26:11,086 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:11,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1592992894, now seen corresponding path program 1 times [2024-09-12 16:26:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320626043] [2024-09-12 16:26:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320626043] [2024-09-12 16:26:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320626043] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:11,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:11,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659353321] [2024-09-12 16:26:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:11,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:11,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:11,147 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:11,172 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-12 16:26:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:26:11,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-12 16:26:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:11,173 INFO L225 Difference]: With dead ends: 44 [2024-09-12 16:26:11,174 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 16:26:11,174 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:11,175 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:11,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 16:26:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-12 16:26:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 16:26:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-12 16:26:11,180 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2024-09-12 16:26:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:11,180 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-12 16:26:11,180 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:11,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-12 16:26:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 16:26:11,181 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:11,181 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:11,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 16:26:11,181 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:11,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2012013244, now seen corresponding path program 1 times [2024-09-12 16:26:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:11,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921186403] [2024-09-12 16:26:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921186403] [2024-09-12 16:26:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921186403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320990403] [2024-09-12 16:26:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:11,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:11,449 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) [2024-09-12 16:26:11,450 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:26:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 16:26:11,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 16:26:11,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:11,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320990403] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:11,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:11,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-09-12 16:26:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189759450] [2024-09-12 16:26:11,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:11,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:26:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:26:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:26:11,972 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 16:26:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:12,124 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-09-12 16:26:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 16:26:12,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2024-09-12 16:26:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:12,125 INFO L225 Difference]: With dead ends: 42 [2024-09-12 16:26:12,125 INFO L226 Difference]: Without dead ends: 38 [2024-09-12 16:26:12,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-09-12 16:26:12,126 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:12,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-12 16:26:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-09-12 16:26:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 16:26:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-09-12 16:26:12,136 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2024-09-12 16:26:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:12,136 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-09-12 16:26:12,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 16:26:12,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-09-12 16:26:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 16:26:12,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:12,137 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:12,150 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:26:12,338 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 [2024-09-12 16:26:12,338 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:12,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash 537295668, now seen corresponding path program 1 times [2024-09-12 16:26:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11219789] [2024-09-12 16:26:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 16:26:12,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:12,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11219789] [2024-09-12 16:26:12,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11219789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:12,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854766630] [2024-09-12 16:26:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:12,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:12,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:12,625 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) [2024-09-12 16:26:12,627 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:26:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 16:26:12,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 16:26:12,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 16:26:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854766630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:13,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-09-12 16:26:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330644359] [2024-09-12 16:26:13,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:13,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 16:26:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 16:26:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-09-12 16:26:13,335 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-12 16:26:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:13,620 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-12 16:26:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 16:26:13,621 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 36 [2024-09-12 16:26:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:13,622 INFO L225 Difference]: With dead ends: 48 [2024-09-12 16:26:13,622 INFO L226 Difference]: Without dead ends: 44 [2024-09-12 16:26:13,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-09-12 16:26:13,623 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:13,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 299 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-12 16:26:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-09-12 16:26:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 16:26:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-12 16:26:13,630 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2024-09-12 16:26:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:13,630 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-12 16:26:13,631 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-12 16:26:13,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-12 16:26:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 16:26:13,632 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:13,632 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:13,647 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:26:13,836 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 [2024-09-12 16:26:13,837 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:13,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2054135496, now seen corresponding path program 2 times [2024-09-12 16:26:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353019852] [2024-09-12 16:26:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:13,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:13,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 16:26:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:14,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353019852] [2024-09-12 16:26:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353019852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:14,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451221665] [2024-09-12 16:26:14,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:14,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:14,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:14,216 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) [2024-09-12 16:26:14,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:26:14,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:14,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:14,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 16:26:14,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 16:26:14,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:26:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451221665] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:14,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:14,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-09-12 16:26:14,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675306289] [2024-09-12 16:26:14,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:14,996 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 16:26:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:14,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 16:26:14,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-09-12 16:26:14,998 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-12 16:26:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:15,279 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-12 16:26:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 16:26:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 43 [2024-09-12 16:26:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:15,281 INFO L225 Difference]: With dead ends: 54 [2024-09-12 16:26:15,281 INFO L226 Difference]: Without dead ends: 50 [2024-09-12 16:26:15,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 16:26:15,282 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:15,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 289 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-12 16:26:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2024-09-12 16:26:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 16:26:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-12 16:26:15,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2024-09-12 16:26:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:15,298 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-12 16:26:15,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-12 16:26:15,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-12 16:26:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 16:26:15,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:15,299 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:15,326 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 16:26:15,500 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 [2024-09-12 16:26:15,500 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:15,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 620923892, now seen corresponding path program 2 times [2024-09-12 16:26:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725931402] [2024-09-12 16:26:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:16,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:16,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 16:26:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725931402] [2024-09-12 16:26:16,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725931402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415010751] [2024-09-12 16:26:16,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:16,137 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) [2024-09-12 16:26:16,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:26:16,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:16,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:16,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 16:26:16,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 16:26:16,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:26:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415010751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:17,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:17,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-09-12 16:26:17,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098996608] [2024-09-12 16:26:17,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:17,013 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 16:26:17,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:17,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 16:26:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-09-12 16:26:17,015 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-12 16:26:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:17,396 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-09-12 16:26:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 16:26:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 50 [2024-09-12 16:26:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:17,400 INFO L225 Difference]: With dead ends: 60 [2024-09-12 16:26:17,400 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 16:26:17,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 16:26:17,401 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:17,401 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 359 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 16:26:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-09-12 16:26:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 16:26:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-09-12 16:26:17,413 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2024-09-12 16:26:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:17,413 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-09-12 16:26:17,413 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-12 16:26:17,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-09-12 16:26:17,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 16:26:17,416 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:17,416 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:17,429 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:17,620 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 [2024-09-12 16:26:17,621 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:17,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash -583855668, now seen corresponding path program 3 times [2024-09-12 16:26:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:17,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874965852] [2024-09-12 16:26:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:17,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:17,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:17,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:17,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 16:26:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874965852] [2024-09-12 16:26:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874965852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347872460] [2024-09-12 16:26:18,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:18,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:18,344 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) [2024-09-12 16:26:18,348 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:26:18,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 16:26:18,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:18,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 16:26:18,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-12 16:26:18,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 16:26:19,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347872460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:19,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:19,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-09-12 16:26:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395321613] [2024-09-12 16:26:19,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:19,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 16:26:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 16:26:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 16:26:19,407 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-12 16:26:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:19,770 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-09-12 16:26:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 16:26:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 57 [2024-09-12 16:26:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:19,771 INFO L225 Difference]: With dead ends: 66 [2024-09-12 16:26:19,771 INFO L226 Difference]: Without dead ends: 62 [2024-09-12 16:26:19,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 16:26:19,772 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:19,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 396 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-12 16:26:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-09-12 16:26:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 10 states have return successors, (11), 10 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-12 16:26:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-09-12 16:26:19,784 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2024-09-12 16:26:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:19,784 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-09-12 16:26:19,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-12 16:26:19,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-09-12 16:26:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 16:26:19,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:19,785 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:19,797 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 16:26:19,989 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 [2024-09-12 16:26:19,989 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:19,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -472917964, now seen corresponding path program 3 times [2024-09-12 16:26:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579394613] [2024-09-12 16:26:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-12 16:26:20,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579394613] [2024-09-12 16:26:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579394613] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977359351] [2024-09-12 16:26:20,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:20,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:20,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:20,550 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) [2024-09-12 16:26:20,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:26:20,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 16:26:20,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:20,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 16:26:20,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 16:26:20,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 16:26:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977359351] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:21,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-09-12 16:26:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300661329] [2024-09-12 16:26:21,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:21,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 16:26:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 16:26:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 16:26:21,715 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-12 16:26:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:22,239 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-09-12 16:26:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 16:26:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2024-09-12 16:26:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:22,240 INFO L225 Difference]: With dead ends: 72 [2024-09-12 16:26:22,240 INFO L226 Difference]: Without dead ends: 68 [2024-09-12 16:26:22,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 16:26:22,242 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:22,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 479 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-12 16:26:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2024-09-12 16:26:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 11 states have return successors, (12), 11 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-12 16:26:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-09-12 16:26:22,259 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2024-09-12 16:26:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:22,259 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-09-12 16:26:22,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-12 16:26:22,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-09-12 16:26:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 16:26:22,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:22,260 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:22,278 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 16:26:22,464 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 [2024-09-12 16:26:22,465 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:22,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash 749237840, now seen corresponding path program 4 times [2024-09-12 16:26:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007198376] [2024-09-12 16:26:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-12 16:26:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007198376] [2024-09-12 16:26:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007198376] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810569154] [2024-09-12 16:26:23,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:26:23,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:23,318 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) [2024-09-12 16:26:23,320 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 16:26:23,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:26:23,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:23,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 16:26:23,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 16:26:23,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 16:26:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810569154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:24,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-09-12 16:26:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304931858] [2024-09-12 16:26:24,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:24,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 16:26:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 16:26:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 16:26:24,747 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-12 16:26:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:25,264 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-12 16:26:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 16:26:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 71 [2024-09-12 16:26:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:25,265 INFO L225 Difference]: With dead ends: 78 [2024-09-12 16:26:25,265 INFO L226 Difference]: Without dead ends: 74 [2024-09-12 16:26:25,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 16:26:25,267 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:25,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 580 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-12 16:26:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2024-09-12 16:26:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 12 states have return successors, (13), 12 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-12 16:26:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-09-12 16:26:25,279 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2024-09-12 16:26:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:25,280 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-09-12 16:26:25,280 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-12 16:26:25,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-09-12 16:26:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 16:26:25,281 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:25,281 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:25,295 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:25,481 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 [2024-09-12 16:26:25,481 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:25,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:25,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1701421044, now seen corresponding path program 4 times [2024-09-12 16:26:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114510516] [2024-09-12 16:26:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:25,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-09-12 16:26:26,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114510516] [2024-09-12 16:26:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114510516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058293062] [2024-09-12 16:26:26,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:26:26,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:26,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:26,361 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 16:26:26,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:26:26,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:26,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-12 16:26:26,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-12 16:26:26,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-12 16:26:27,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058293062] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:27,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:27,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-09-12 16:26:27,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210308519] [2024-09-12 16:26:27,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:27,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 16:26:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 16:26:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 16:26:27,997 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-12 16:26:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:28,650 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-09-12 16:26:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 16:26:28,651 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 78 [2024-09-12 16:26:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:28,653 INFO L225 Difference]: With dead ends: 84 [2024-09-12 16:26:28,653 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 16:26:28,654 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 16:26:28,654 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:28,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 559 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:26:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 16:26:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2024-09-12 16:26:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 13 states have return successors, (14), 13 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-12 16:26:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-09-12 16:26:28,679 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2024-09-12 16:26:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:28,679 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-09-12 16:26:28,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-12 16:26:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-09-12 16:26:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 16:26:28,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:28,682 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:28,694 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 16:26:28,882 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:28,882 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:28,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -475870124, now seen corresponding path program 5 times [2024-09-12 16:26:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626663084] [2024-09-12 16:26:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-12 16:26:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626663084] [2024-09-12 16:26:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626663084] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186869195] [2024-09-12 16:26:29,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:26:29,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:29,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:29,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 16:26:29,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 16:26:29,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:29,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 16:26:29,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-12 16:26:30,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 16:26:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186869195] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:31,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-09-12 16:26:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742174730] [2024-09-12 16:26:31,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:31,787 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 16:26:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 16:26:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 16:26:31,788 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-12 16:26:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:32,394 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-09-12 16:26:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 16:26:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) Word has length 85 [2024-09-12 16:26:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:32,395 INFO L225 Difference]: With dead ends: 90 [2024-09-12 16:26:32,395 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 16:26:32,396 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 16:26:32,396 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:32,396 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 637 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 16:26:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2024-09-12 16:26:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 5 states have call successors, (5), 4 states have call predecessors, (5), 14 states have return successors, (15), 14 states have call predecessors, (15), 4 states have call successors, (15) [2024-09-12 16:26:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-09-12 16:26:32,421 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2024-09-12 16:26:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:32,421 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-09-12 16:26:32,422 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-12 16:26:32,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-09-12 16:26:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 16:26:32,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:32,425 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:32,438 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:32,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 16:26:32,626 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:32,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2053954764, now seen corresponding path program 5 times [2024-09-12 16:26:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045608235] [2024-09-12 16:26:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:32,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:32,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:32,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-12 16:26:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045608235] [2024-09-12 16:26:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045608235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234035620] [2024-09-12 16:26:33,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:26:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:33,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:33,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 16:26:33,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 16:26:33,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:33,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-12 16:26:33,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-12 16:26:34,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 16:26:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234035620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:36,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-09-12 16:26:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355007310] [2024-09-12 16:26:36,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:36,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 16:26:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 16:26:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 16:26:36,078 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-12 16:26:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:36,928 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-09-12 16:26:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 16:26:36,928 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) Word has length 92 [2024-09-12 16:26:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:36,929 INFO L225 Difference]: With dead ends: 96 [2024-09-12 16:26:36,929 INFO L226 Difference]: Without dead ends: 92 [2024-09-12 16:26:36,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 16:26:36,931 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:36,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 667 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:26:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-12 16:26:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2024-09-12 16:26:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 5 states have call successors, (5), 4 states have call predecessors, (5), 15 states have return successors, (16), 15 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-12 16:26:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-09-12 16:26:36,948 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2024-09-12 16:26:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:36,948 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-09-12 16:26:36,948 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-12 16:26:36,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-09-12 16:26:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-12 16:26:36,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:36,949 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:36,973 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:37,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 16:26:37,150 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:37,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash -142797864, now seen corresponding path program 6 times [2024-09-12 16:26:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422905268] [2024-09-12 16:26:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-12 16:26:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422905268] [2024-09-12 16:26:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422905268] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292647002] [2024-09-12 16:26:38,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:26:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:38,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:38,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:38,348 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 16:26:38,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 16:26:38,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:38,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-12 16:26:38,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-09-12 16:26:38,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 16:26:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292647002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:40,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-09-12 16:26:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142645692] [2024-09-12 16:26:40,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:40,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 16:26:40,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 16:26:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 16:26:40,734 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-12 16:26:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:41,592 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2024-09-12 16:26:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 16:26:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 99 [2024-09-12 16:26:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:41,594 INFO L225 Difference]: With dead ends: 102 [2024-09-12 16:26:41,594 INFO L226 Difference]: Without dead ends: 98 [2024-09-12 16:26:41,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 16:26:41,595 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:41,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 691 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:26:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-12 16:26:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2024-09-12 16:26:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 16 states have return successors, (17), 16 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-12 16:26:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-09-12 16:26:41,618 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2024-09-12 16:26:41,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:41,618 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-09-12 16:26:41,618 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-12 16:26:41,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-09-12 16:26:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-12 16:26:41,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:41,619 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:41,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 16:26:41,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 16:26:41,824 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -86531596, now seen corresponding path program 6 times [2024-09-12 16:26:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102545468] [2024-09-12 16:26:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:43,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:43,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-09-12 16:26:43,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102545468] [2024-09-12 16:26:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102545468] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521693213] [2024-09-12 16:26:43,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:26:43,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:43,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:43,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:43,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 16:26:43,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 16:26:43,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:43,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-12 16:26:43,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-12 16:26:43,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-12 16:26:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521693213] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:45,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-09-12 16:26:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51990967] [2024-09-12 16:26:45,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:45,926 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 16:26:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 16:26:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 16:26:45,927 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-12 16:26:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:46,893 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2024-09-12 16:26:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 16:26:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 106 [2024-09-12 16:26:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:46,895 INFO L225 Difference]: With dead ends: 108 [2024-09-12 16:26:46,895 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 16:26:46,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 16:26:46,897 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:46,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 773 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 16:26:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 16:26:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2024-09-12 16:26:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 17 states have return successors, (18), 17 states have call predecessors, (18), 4 states have call successors, (18) [2024-09-12 16:26:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-09-12 16:26:46,923 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2024-09-12 16:26:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:46,923 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-09-12 16:26:46,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-12 16:26:46,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-09-12 16:26:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-12 16:26:46,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:46,924 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:46,937 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:47,125 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 16:26:47,125 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:47,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash -736473892, now seen corresponding path program 7 times [2024-09-12 16:26:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:47,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312751759] [2024-09-12 16:26:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:47,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-12 16:26:48,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312751759] [2024-09-12 16:26:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312751759] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134609785] [2024-09-12 16:26:48,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:26:48,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:48,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 16:26:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:48,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 16:26:48,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-09-12 16:26:48,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-12 16:26:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134609785] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:51,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-09-12 16:26:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527442750] [2024-09-12 16:26:51,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:51,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 16:26:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 16:26:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 16:26:51,456 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-12 16:26:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:52,535 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-09-12 16:26:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-12 16:26:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) Word has length 113 [2024-09-12 16:26:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:52,537 INFO L225 Difference]: With dead ends: 114 [2024-09-12 16:26:52,537 INFO L226 Difference]: Without dead ends: 110 [2024-09-12 16:26:52,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 16:26:52,539 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:52,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 862 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 16:26:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-12 16:26:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2024-09-12 16:26:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 18 states have return successors, (19), 18 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-12 16:26:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-09-12 16:26:52,566 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 113 [2024-09-12 16:26:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:52,566 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-09-12 16:26:52,567 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-12 16:26:52,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-09-12 16:26:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 16:26:52,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:52,567 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:52,580 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:52,768 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 16:26:52,768 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:52,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -561357772, now seen corresponding path program 7 times [2024-09-12 16:26:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866298350] [2024-09-12 16:26:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:53,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-12 16:26:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866298350] [2024-09-12 16:26:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866298350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259902705] [2024-09-12 16:26:54,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:26:54,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:54,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:54,765 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 16:26:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:54,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-12 16:26:54,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-09-12 16:26:55,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-12 16:26:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259902705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:58,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:58,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-09-12 16:26:58,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122400023] [2024-09-12 16:26:58,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:58,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 16:26:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 16:26:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 16:26:58,230 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-12 16:26:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:59,364 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-09-12 16:26:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 16:26:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) Word has length 120 [2024-09-12 16:26:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:59,366 INFO L225 Difference]: With dead ends: 120 [2024-09-12 16:26:59,366 INFO L226 Difference]: Without dead ends: 116 [2024-09-12 16:26:59,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 16:26:59,367 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:59,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 909 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 16:26:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-12 16:26:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72. [2024-09-12 16:26:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 19 states have return successors, (20), 19 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-12 16:26:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-09-12 16:26:59,403 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 120 [2024-09-12 16:26:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:59,403 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-09-12 16:26:59,403 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-12 16:26:59,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-09-12 16:26:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-12 16:26:59,406 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:59,406 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:59,432 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:59,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:59,607 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -672827552, now seen corresponding path program 8 times [2024-09-12 16:26:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677270967] [2024-09-12 16:26:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:59,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:59,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:59,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:00,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-12 16:27:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677270967] [2024-09-12 16:27:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677270967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808691896] [2024-09-12 16:27:01,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:27:01,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:01,415 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:01,416 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 16:27:01,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:27:01,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:01,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-12 16:27:01,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-09-12 16:27:01,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-12 16:27:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808691896] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:05,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-09-12 16:27:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020493539] [2024-09-12 16:27:05,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:05,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 16:27:05,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 16:27:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 16:27:05,116 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-12 16:27:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:06,468 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2024-09-12 16:27:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 16:27:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) Word has length 127 [2024-09-12 16:27:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:06,470 INFO L225 Difference]: With dead ends: 126 [2024-09-12 16:27:06,470 INFO L226 Difference]: Without dead ends: 122 [2024-09-12 16:27:06,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 16:27:06,471 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 90 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:06,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1206 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 16:27:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-12 16:27:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-09-12 16:27:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 20 states have return successors, (21), 20 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-12 16:27:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-09-12 16:27:06,505 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 127 [2024-09-12 16:27:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:06,506 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-09-12 16:27:06,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-12 16:27:06,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-09-12 16:27:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-12 16:27:06,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:06,507 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:06,519 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 16:27:06,710 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:06,711 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:06,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1262054924, now seen corresponding path program 8 times [2024-09-12 16:27:06,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:06,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770881036] [2024-09-12 16:27:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:06,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:06,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:06,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:07,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 16:27:08,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:08,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770881036] [2024-09-12 16:27:08,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770881036] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:08,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482598019] [2024-09-12 16:27:08,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:27:08,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:08,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:08,724 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 16:27:08,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:27:08,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:08,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-12 16:27:08,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-09-12 16:27:09,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-12 16:27:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482598019] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:12,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:12,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-09-12 16:27:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603437507] [2024-09-12 16:27:12,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:12,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 16:27:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 16:27:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 16:27:12,272 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-12 16:27:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:13,873 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-09-12 16:27:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 16:27:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 134 [2024-09-12 16:27:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:13,875 INFO L225 Difference]: With dead ends: 132 [2024-09-12 16:27:13,875 INFO L226 Difference]: Without dead ends: 128 [2024-09-12 16:27:13,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 16:27:13,880 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:13,880 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1210 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 16:27:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-12 16:27:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2024-09-12 16:27:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 21 states have return successors, (22), 21 states have call predecessors, (22), 4 states have call successors, (22) [2024-09-12 16:27:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-09-12 16:27:13,932 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 134 [2024-09-12 16:27:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:13,933 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-09-12 16:27:13,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-12 16:27:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-09-12 16:27:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 16:27:13,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:13,934 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:13,947 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 16:27:14,138 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:14,140 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:14,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1339134820, now seen corresponding path program 9 times [2024-09-12 16:27:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028939744] [2024-09-12 16:27:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:14,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:14,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:14,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:14,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:15,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-12 16:27:16,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028939744] [2024-09-12 16:27:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028939744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959658678] [2024-09-12 16:27:16,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:27:16,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:16,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:16,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:16,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 16:27:16,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 16:27:16,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:16,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-09-12 16:27:16,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-09-12 16:27:16,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-12 16:27:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959658678] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:21,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-09-12 16:27:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920812703] [2024-09-12 16:27:21,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:21,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 16:27:21,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 16:27:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 16:27:21,032 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-12 16:27:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:22,661 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2024-09-12 16:27:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 16:27:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) Word has length 141 [2024-09-12 16:27:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:22,663 INFO L225 Difference]: With dead ends: 138 [2024-09-12 16:27:22,663 INFO L226 Difference]: Without dead ends: 134 [2024-09-12 16:27:22,665 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 16:27:22,665 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:22,666 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1338 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 16:27:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-12 16:27:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2024-09-12 16:27:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 22 states have return successors, (23), 22 states have call predecessors, (23), 4 states have call successors, (23) [2024-09-12 16:27:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-09-12 16:27:22,717 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 141 [2024-09-12 16:27:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:22,717 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-09-12 16:27:22,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-12 16:27:22,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-09-12 16:27:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-12 16:27:22,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:22,718 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:22,732 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 16:27:22,922 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:22,923 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:22,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:22,923 INFO L85 PathProgramCache]: Analyzing trace with hash -194018508, now seen corresponding path program 9 times [2024-09-12 16:27:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:22,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230376553] [2024-09-12 16:27:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:22,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:23,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:24,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-09-12 16:27:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230376553] [2024-09-12 16:27:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230376553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598602175] [2024-09-12 16:27:25,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:27:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:25,554 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:25,555 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 16:27:25,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 16:27:25,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:25,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-12 16:27:25,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-09-12 16:27:25,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-12 16:27:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598602175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:30,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-09-12 16:27:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368588440] [2024-09-12 16:27:30,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:30,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 16:27:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 16:27:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 16:27:30,902 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-12 16:27:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:32,610 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2024-09-12 16:27:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 16:27:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) Word has length 148 [2024-09-12 16:27:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:32,611 INFO L225 Difference]: With dead ends: 144 [2024-09-12 16:27:32,611 INFO L226 Difference]: Without dead ends: 140 [2024-09-12 16:27:32,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-09-12 16:27:32,613 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:32,613 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1175 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 16:27:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-12 16:27:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2024-09-12 16:27:32,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 23 states have return successors, (24), 23 states have call predecessors, (24), 4 states have call successors, (24) [2024-09-12 16:27:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-09-12 16:27:32,662 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 148 [2024-09-12 16:27:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:32,662 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-09-12 16:27:32,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-12 16:27:32,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-09-12 16:27:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-09-12 16:27:32,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:32,664 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:32,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 16:27:32,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 16:27:32,867 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -212229912, now seen corresponding path program 10 times [2024-09-12 16:27:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346585966] [2024-09-12 16:27:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:33,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:34,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-09-12 16:27:35,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346585966] [2024-09-12 16:27:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346585966] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109816638] [2024-09-12 16:27:35,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:27:35,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:35,769 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:35,771 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 16:27:35,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:27:35,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:35,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-09-12 16:27:35,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-12 16:27:36,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 16:27:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109816638] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:40,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-09-12 16:27:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048396946] [2024-09-12 16:27:40,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:40,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 16:27:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 16:27:40,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 16:27:40,834 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-12 16:27:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:42,715 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-09-12 16:27:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 16:27:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) Word has length 155 [2024-09-12 16:27:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:42,717 INFO L225 Difference]: With dead ends: 150 [2024-09-12 16:27:42,717 INFO L226 Difference]: Without dead ends: 146 [2024-09-12 16:27:42,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-09-12 16:27:42,718 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 90 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:42,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1523 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 16:27:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-12 16:27:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-09-12 16:27:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 24 states have return successors, (25), 24 states have call predecessors, (25), 4 states have call successors, (25) [2024-09-12 16:27:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-09-12 16:27:42,771 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 155 [2024-09-12 16:27:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:42,772 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-09-12 16:27:42,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-12 16:27:42,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-09-12 16:27:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-09-12 16:27:42,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:42,773 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:42,786 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 16:27:42,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 16:27:42,977 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:42,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash 254832628, now seen corresponding path program 10 times [2024-09-12 16:27:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716687369] [2024-09-12 16:27:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:43,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:43,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:43,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:43,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:43,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:44,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:45,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-12 16:27:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716687369] [2024-09-12 16:27:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716687369] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211804770] [2024-09-12 16:27:46,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:27:46,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:46,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:46,029 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:46,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 16:27:46,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:27:46,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:46,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-09-12 16:27:46,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-09-12 16:27:46,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-09-12 16:27:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211804770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:51,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:51,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-09-12 16:27:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950938302] [2024-09-12 16:27:51,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:51,495 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 16:27:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 16:27:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 16:27:51,496 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-12 16:27:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:53,603 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2024-09-12 16:27:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 16:27:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) Word has length 162 [2024-09-12 16:27:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:53,604 INFO L225 Difference]: With dead ends: 156 [2024-09-12 16:27:53,604 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 16:27:53,605 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-09-12 16:27:53,605 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:53,606 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1472 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 16:27:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 16:27:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2024-09-12 16:27:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 25 states have return successors, (26), 25 states have call predecessors, (26), 4 states have call successors, (26) [2024-09-12 16:27:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-09-12 16:27:53,670 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 162 [2024-09-12 16:27:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:53,670 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-09-12 16:27:53,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-12 16:27:53,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:53,671 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-09-12 16:27:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-12 16:27:53,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:53,671 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:53,684 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 16:27:53,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 16:27:53,872 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:53,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash -528441364, now seen corresponding path program 11 times [2024-09-12 16:27:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479830854] [2024-09-12 16:27:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:27:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:57,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:57,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:57,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:57,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-09-12 16:27:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479830854] [2024-09-12 16:27:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479830854] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323521323] [2024-09-12 16:27:57,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:27:57,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:57,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:57,361 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:57,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 16:27:57,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 16:27:57,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:57,558 WARN L260 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 16:27:57,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-09-12 16:27:57,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:28:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-12 16:28:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323521323] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:28:03,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:28:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2024-09-12 16:28:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580114064] [2024-09-12 16:28:03,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:28:03,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-12 16:28:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:28:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-12 16:28:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 16:28:03,445 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-12 16:28:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:28:05,583 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-09-12 16:28:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 16:28:05,583 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) Word has length 169 [2024-09-12 16:28:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:28:05,589 INFO L225 Difference]: With dead ends: 162 [2024-09-12 16:28:05,589 INFO L226 Difference]: Without dead ends: 158 [2024-09-12 16:28:05,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1012, Invalid=14738, Unknown=0, NotChecked=0, Total=15750 [2024-09-12 16:28:05,591 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 256 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 16:28:05,592 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1725 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 16:28:05,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-12 16:28:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2024-09-12 16:28:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 26 states have return successors, (27), 26 states have call predecessors, (27), 4 states have call successors, (27) [2024-09-12 16:28:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-09-12 16:28:05,696 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 169 [2024-09-12 16:28:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:28:05,696 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-09-12 16:28:05,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-12 16:28:05,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-09-12 16:28:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 16:28:05,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:28:05,697 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:28:05,710 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 16:28:05,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 16:28:05,898 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:28:05,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -109275084, now seen corresponding path program 11 times [2024-09-12 16:28:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:28:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905765615] [2024-09-12 16:28:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:28:05,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:28:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:06,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:28:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:06,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:28:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:06,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:06,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:06,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:07,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:07,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:07,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:07,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:07,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:08,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-12 16:28:09,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:28:09,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905765615] [2024-09-12 16:28:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905765615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:28:09,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785026354] [2024-09-12 16:28:09,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:28:09,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:09,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:28:09,683 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:28:09,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 16:28:09,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 16:28:09,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:28:09,892 WARN L260 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-09-12 16:28:09,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:28:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-12 16:28:10,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:28:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-12 16:28:16,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785026354] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:28:16,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:28:16,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-09-12 16:28:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815605635] [2024-09-12 16:28:16,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:28:16,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 16:28:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:28:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 16:28:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 16:28:16,254 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-12 16:28:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:28:18,528 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2024-09-12 16:28:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 16:28:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) Word has length 176 [2024-09-12 16:28:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:28:18,529 INFO L225 Difference]: With dead ends: 168 [2024-09-12 16:28:18,529 INFO L226 Difference]: Without dead ends: 164 [2024-09-12 16:28:18,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-09-12 16:28:18,531 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 3147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:28:18,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1833 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 16:28:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-12 16:28:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2024-09-12 16:28:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 27 states have return successors, (28), 27 states have call predecessors, (28), 4 states have call successors, (28) [2024-09-12 16:28:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-09-12 16:28:18,606 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 176 [2024-09-12 16:28:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:28:18,606 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-09-12 16:28:18,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-12 16:28:18,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-09-12 16:28:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-09-12 16:28:18,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:28:18,607 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:28:18,620 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 16:28:18,811 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 16:28:18,812 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:28:18,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash 399609968, now seen corresponding path program 12 times [2024-09-12 16:28:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:28:18,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683506826] [2024-09-12 16:28:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:28:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:28:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:19,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:28:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:19,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:28:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:19,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:19,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:20,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:20,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:20,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:20,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:20,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:21,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:22,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-12 16:28:23,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:28:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683506826] [2024-09-12 16:28:23,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683506826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:28:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630535751] [2024-09-12 16:28:23,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:28:23,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:23,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:28:23,027 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:28:23,027 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 16:28:23,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 16:28:23,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:28:23,261 WARN L260 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-09-12 16:28:23,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:28:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-09-12 16:28:23,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:28:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 16:28:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630535751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:28:30,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:28:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2024-09-12 16:28:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44409586] [2024-09-12 16:28:30,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:28:30,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-12 16:28:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:28:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-12 16:28:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 16:28:30,190 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-12 16:28:32,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:28:32,490 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2024-09-12 16:28:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 16:28:32,490 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) Word has length 183 [2024-09-12 16:28:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:28:32,492 INFO L225 Difference]: With dead ends: 174 [2024-09-12 16:28:32,492 INFO L226 Difference]: Without dead ends: 170 [2024-09-12 16:28:32,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1148, Invalid=17212, Unknown=0, NotChecked=0, Total=18360 [2024-09-12 16:28:32,494 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 150 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 16:28:32,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1815 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 16:28:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-12 16:28:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 99. [2024-09-12 16:28:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 28 states have return successors, (29), 28 states have call predecessors, (29), 4 states have call successors, (29) [2024-09-12 16:28:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-09-12 16:28:32,581 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 183 [2024-09-12 16:28:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:28:32,581 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-09-12 16:28:32,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-12 16:28:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-09-12 16:28:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-12 16:28:32,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:28:32,583 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:28:32,596 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 16:28:32,786 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 16:28:32,786 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:28:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 848247796, now seen corresponding path program 12 times [2024-09-12 16:28:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:28:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015935234] [2024-09-12 16:28:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:28:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:28:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:33,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:28:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:33,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:28:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:33,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:33,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:34,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:34,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:34,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:34,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:35,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:36,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-12 16:28:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:28:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015935234] [2024-09-12 16:28:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015935234] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:28:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484505126] [2024-09-12 16:28:37,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:28:37,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:28:37,498 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:28:37,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 16:28:37,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 16:28:37,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:28:37,763 WARN L260 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-09-12 16:28:37,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:28:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 16:28:38,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:28:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-12 16:28:45,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484505126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:28:45,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:28:45,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-09-12 16:28:45,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699847279] [2024-09-12 16:28:45,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:28:45,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-12 16:28:45,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:28:45,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-12 16:28:45,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 16:28:45,894 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-12 16:28:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:28:48,741 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-09-12 16:28:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-12 16:28:48,742 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) Word has length 190 [2024-09-12 16:28:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:28:48,743 INFO L225 Difference]: With dead ends: 180 [2024-09-12 16:28:48,743 INFO L226 Difference]: Without dead ends: 176 [2024-09-12 16:28:48,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-09-12 16:28:48,744 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 50 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:28:48,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1813 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 16:28:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-12 16:28:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2024-09-12 16:28:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 29 states have return successors, (30), 29 states have call predecessors, (30), 4 states have call successors, (30) [2024-09-12 16:28:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-09-12 16:28:48,837 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 190 [2024-09-12 16:28:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:28:48,838 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-09-12 16:28:48,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-12 16:28:48,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-09-12 16:28:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-12 16:28:48,839 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:28:48,839 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:28:48,854 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 16:28:49,039 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 16:28:49,040 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:28:49,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2019521140, now seen corresponding path program 13 times [2024-09-12 16:28:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:28:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740321109] [2024-09-12 16:28:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:28:49,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:28:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:49,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:28:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:49,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:28:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:49,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:50,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:50,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:50,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:51,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:51,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:51,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:51,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:52,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:53,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:54,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:54,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:54,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-09-12 16:28:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:28:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740321109] [2024-09-12 16:28:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740321109] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:28:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128780804] [2024-09-12 16:28:54,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:28:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:28:54,331 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:28:54,332 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 16:28:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:54,609 WARN L260 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-09-12 16:28:54,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:28:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-09-12 16:28:54,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:29:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-12 16:29:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128780804] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:29:03,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:29:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2024-09-12 16:29:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120887211] [2024-09-12 16:29:03,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:29:03,315 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-12 16:29:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:29:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-12 16:29:03,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 16:29:03,317 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-12 16:29:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:29:06,663 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2024-09-12 16:29:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-12 16:29:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) Word has length 197 [2024-09-12 16:29:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:29:06,665 INFO L225 Difference]: With dead ends: 186 [2024-09-12 16:29:06,665 INFO L226 Difference]: Without dead ends: 182 [2024-09-12 16:29:06,667 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1292, Invalid=19878, Unknown=0, NotChecked=0, Total=21170 [2024-09-12 16:29:06,667 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:29:06,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2366 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 16:29:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-12 16:29:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2024-09-12 16:29:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 30 states have return successors, (31), 30 states have call predecessors, (31), 4 states have call successors, (31) [2024-09-12 16:29:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-09-12 16:29:06,776 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 197 [2024-09-12 16:29:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:29:06,777 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-09-12 16:29:06,777 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-12 16:29:06,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-09-12 16:29:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-12 16:29:06,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:29:06,778 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:29:06,792 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 16:29:06,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:06,983 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:29:06,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1282120500, now seen corresponding path program 13 times [2024-09-12 16:29:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:29:06,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119787466] [2024-09-12 16:29:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:29:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:29:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:07,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:29:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:07,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:29:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:07,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:08,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:08,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:08,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:09,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:09,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:09,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:09,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:10,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:11,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-09-12 16:29:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:29:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119787466] [2024-09-12 16:29:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119787466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:29:12,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530144898] [2024-09-12 16:29:12,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:29:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:29:12,494 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:29:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 16:29:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:12,807 WARN L260 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-12 16:29:12,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:29:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-12 16:29:13,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:29:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-12 16:29:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530144898] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:29:21,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:29:21,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-09-12 16:29:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745527244] [2024-09-12 16:29:21,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:29:21,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 16:29:21,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:29:21,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 16:29:21,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 16:29:21,853 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-12 16:29:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:29:25,110 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2024-09-12 16:29:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 16:29:25,110 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) Word has length 204 [2024-09-12 16:29:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:29:25,111 INFO L225 Difference]: With dead ends: 192 [2024-09-12 16:29:25,111 INFO L226 Difference]: Without dead ends: 188 [2024-09-12 16:29:25,114 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-09-12 16:29:25,114 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:29:25,114 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2176 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 16:29:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-12 16:29:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2024-09-12 16:29:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 31 states have return successors, (32), 31 states have call predecessors, (32), 4 states have call successors, (32) [2024-09-12 16:29:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-09-12 16:29:25,237 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 204 [2024-09-12 16:29:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:29:25,237 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-09-12 16:29:25,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-12 16:29:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-09-12 16:29:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-12 16:29:25,238 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:29:25,238 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:29:25,252 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 16:29:25,442 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:25,443 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:29:25,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1002784248, now seen corresponding path program 14 times [2024-09-12 16:29:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:29:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253349592] [2024-09-12 16:29:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:29:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:29:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:25,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:29:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:25,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:29:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:26,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:26,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:27,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:27,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:27,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:28,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:28,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:28,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:28,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:29,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:29,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:29,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:29,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:29,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:30,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-09-12 16:29:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:29:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253349592] [2024-09-12 16:29:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253349592] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:29:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827297031] [2024-09-12 16:29:31,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:29:31,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:31,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:29:31,676 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:29:31,677 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 16:29:32,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:29:32,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:29:32,018 WARN L260 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-12 16:29:32,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:29:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-09-12 16:29:32,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:29:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-09-12 16:29:41,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827297031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:29:41,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:29:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2024-09-12 16:29:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891279110] [2024-09-12 16:29:41,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:29:41,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-12 16:29:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:29:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-12 16:29:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2024-09-12 16:29:41,174 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-12 16:29:44,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:29:44,656 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2024-09-12 16:29:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 16:29:44,656 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) Word has length 211 [2024-09-12 16:29:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:29:44,657 INFO L225 Difference]: With dead ends: 198 [2024-09-12 16:29:44,657 INFO L226 Difference]: Without dead ends: 194 [2024-09-12 16:29:44,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1444, Invalid=22736, Unknown=0, NotChecked=0, Total=24180 [2024-09-12 16:29:44,660 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:29:44,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2354 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 16:29:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-12 16:29:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2024-09-12 16:29:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 32 states have return successors, (33), 32 states have call predecessors, (33), 4 states have call successors, (33) [2024-09-12 16:29:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-09-12 16:29:44,785 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 211 [2024-09-12 16:29:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:29:44,786 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-09-12 16:29:44,786 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-12 16:29:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-09-12 16:29:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-12 16:29:44,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:29:44,787 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:29:44,801 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 16:29:44,991 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:44,991 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:29:44,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash -203622924, now seen corresponding path program 14 times [2024-09-12 16:29:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:29:44,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766006444] [2024-09-12 16:29:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:29:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:29:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:45,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:29:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:45,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:29:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:45,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:46,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:46,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:47,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:47,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:47,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:47,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:48,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:48,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:48,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:48,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:49,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:50,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:51,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:51,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:51,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:51,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-09-12 16:29:51,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:29:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766006444] [2024-09-12 16:29:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766006444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:29:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522998144] [2024-09-12 16:29:51,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:29:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:29:51,467 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:29:51,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 16:29:51,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:29:51,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:29:51,874 WARN L260 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 248 conjuncts are in the unsatisfiable core [2024-09-12 16:29:51,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:29:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2024-09-12 16:29:52,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:30:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-12 16:30:02,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522998144] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:30:02,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:30:02,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 93] total 102 [2024-09-12 16:30:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897827393] [2024-09-12 16:30:02,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:30:02,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-12 16:30:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:30:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-12 16:30:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=9945, Unknown=0, NotChecked=0, Total=10302 [2024-09-12 16:30:02,452 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-12 16:30:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:30:06,299 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2024-09-12 16:30:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-12 16:30:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) Word has length 218 [2024-09-12 16:30:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:30:06,301 INFO L225 Difference]: With dead ends: 204 [2024-09-12 16:30:06,302 INFO L226 Difference]: Without dead ends: 200 [2024-09-12 16:30:06,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1517, Invalid=23923, Unknown=0, NotChecked=0, Total=25440 [2024-09-12 16:30:06,304 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-12 16:30:06,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2420 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-12 16:30:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-12 16:30:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 114. [2024-09-12 16:30:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 33 states have return successors, (34), 33 states have call predecessors, (34), 4 states have call successors, (34) [2024-09-12 16:30:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-09-12 16:30:06,442 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 218 [2024-09-12 16:30:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:30:06,442 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-09-12 16:30:06,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-12 16:30:06,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:30:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-09-12 16:30:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-09-12 16:30:06,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:30:06,444 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:30:06,457 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-12 16:30:06,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 16:30:06,648 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:30:06,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:30:06,648 INFO L85 PathProgramCache]: Analyzing trace with hash -232387844, now seen corresponding path program 15 times [2024-09-12 16:30:06,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:30:06,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887900146] [2024-09-12 16:30:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:30:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:30:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:07,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:30:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:07,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:30:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:07,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:08,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:08,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:08,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:09,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:09,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:09,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:10,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:10,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:10,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:10,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:11,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:11,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:11,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:11,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:12,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:13,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2024-09-12 16:30:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:30:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887900146] [2024-09-12 16:30:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887900146] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:30:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538239448] [2024-09-12 16:30:14,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:30:14,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:30:14,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:30:14,019 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:30:14,024 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 16:30:14,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 16:30:14,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:30:14,479 WARN L260 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-09-12 16:30:14,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:30:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-09-12 16:30:14,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:30:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-12 16:30:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538239448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:30:25,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:30:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 96] total 106 [2024-09-12 16:30:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010019100] [2024-09-12 16:30:25,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:30:25,235 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-12 16:30:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:30:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-12 16:30:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=10756, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 16:30:25,236 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-12 16:30:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:30:28,447 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2024-09-12 16:30:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-12 16:30:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) Word has length 225 [2024-09-12 16:30:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:30:28,449 INFO L225 Difference]: With dead ends: 210 [2024-09-12 16:30:28,449 INFO L226 Difference]: Without dead ends: 206 [2024-09-12 16:30:28,451 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1604, Invalid=25786, Unknown=0, NotChecked=0, Total=27390 [2024-09-12 16:30:28,451 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 196 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:30:28,451 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2624 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 16:30:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-09-12 16:30:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2024-09-12 16:30:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 34 states have return successors, (35), 34 states have call predecessors, (35), 4 states have call successors, (35) [2024-09-12 16:30:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2024-09-12 16:30:28,600 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 225 [2024-09-12 16:30:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:30:28,601 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2024-09-12 16:30:28,601 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-12 16:30:28,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:30:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2024-09-12 16:30:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-09-12 16:30:28,603 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:30:28,603 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:30:28,622 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 16:30:28,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 16:30:28,804 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:30:28,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:30:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2021035060, now seen corresponding path program 15 times [2024-09-12 16:30:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:30:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439529521] [2024-09-12 16:30:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:30:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:30:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:29,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:30:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:29,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:30:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:29,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:30,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:30,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:31,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:31,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:31,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:32,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:32,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:32,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:33,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:33,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:33,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:34,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:34,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:34,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:34,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:34,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:35,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:30:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:30:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 735 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2024-09-12 16:30:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:30:36,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439529521] [2024-09-12 16:30:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439529521] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:30:36,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830585593] [2024-09-12 16:30:36,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:30:36,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:30:36,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:30:36,821 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:30:36,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 16:30:37,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 16:30:37,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:30:37,272 WARN L260 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 264 conjuncts are in the unsatisfiable core [2024-09-12 16:30:37,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:30:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2024-09-12 16:30:37,696 INFO L327 TraceCheckSpWp]: Computing backward predicates...