./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.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 1d5fa637 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-simple/sum_15x0-1.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 b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 --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-1d5fa63-m [2024-09-13 09:50:09,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:50:09,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:50:09,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:50:09,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:50:09,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:50:09,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:50:09,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:50:09,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:50:09,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:50:09,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:50:09,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:50:09,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:50:09,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:50:09,743 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:50:09,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:50:09,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:50:09,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:50:09,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:50:09,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:50:09,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:50:09,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:50:09,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:50:09,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:50:09,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:50:09,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:50:09,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:50:09,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:50:09,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:50:09,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:50:09,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:50:09,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:50:09,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:50:09,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:50:09,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:50:09,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:50:09,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:50:09,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:50:09,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:50:09,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:50:09,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:50:09,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:50:09,964 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:50:09,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-13 09:50:11,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:50:11,256 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:50:11,257 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-13 09:50:11,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f3b7f1f4d/3500ac426060498692586edcdbe8de85/FLAGfbf47273f [2024-09-13 09:50:11,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f3b7f1f4d/3500ac426060498692586edcdbe8de85 [2024-09-13 09:50:11,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:50:11,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:50:11,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:50:11,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:50:11,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:50:11,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586dcce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11, skipping insertion in model container [2024-09-13 09:50:11,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:50:11,453 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-simple/sum_15x0-1.c[481,494] [2024-09-13 09:50:11,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:50:11,463 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:50:11,473 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-simple/sum_15x0-1.c[481,494] [2024-09-13 09:50:11,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:50:11,484 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:50:11,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11 WrapperNode [2024-09-13 09:50:11,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:50:11,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:50:11,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:50:11,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:50:11,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,501 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:50:11,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:50:11,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:50:11,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:50:11,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:50:11,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,517 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]. [2024-09-13 09:50:11,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:50:11,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:50:11,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:50:11,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:50:11,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (1/1) ... [2024-09-13 09:50:11,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:50:11,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:11,550 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) [2024-09-13 09:50:11,553 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 [2024-09-13 09:50:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:50:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:50:11,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:50:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:50:11,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:50:11,588 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-13 09:50:11,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-13 09:50:11,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:50:11,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:50:11,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:50:11,637 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:50:11,639 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:50:11,733 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-13 09:50:11,734 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:50:11,753 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:50:11,753 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 09:50:11,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:50:11 BoogieIcfgContainer [2024-09-13 09:50:11,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:50:11,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:50:11,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:50:11,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:50:11,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:50:11" (1/3) ... [2024-09-13 09:50:11,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0552e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:50:11, skipping insertion in model container [2024-09-13 09:50:11,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:50:11" (2/3) ... [2024-09-13 09:50:11,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0552e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:50:11, skipping insertion in model container [2024-09-13 09:50:11,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:50:11" (3/3) ... [2024-09-13 09:50:11,762 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-13 09:50:11,774 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:50:11,774 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:50:11,813 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:50:11,818 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;@155e48cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:50:11,818 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:50:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 09:50:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 09:50:11,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:11,826 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:11,827 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:11,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-13 09:50:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:11,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935660318] [2024-09-13 09:50:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:11,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:50:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935660318] [2024-09-13 09:50:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935660318] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:50:12,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:50:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:50:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493487741] [2024-09-13 09:50:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:50:12,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:50:12,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:12,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:50:12,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:50:12,075 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-13 09:50:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:12,140 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-13 09:50:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:50:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 13 [2024-09-13 09:50:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:12,149 INFO L225 Difference]: With dead ends: 30 [2024-09-13 09:50:12,149 INFO L226 Difference]: Without dead ends: 18 [2024-09-13 09:50:12,152 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:50:12,154 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 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 [2024-09-13 09:50:12,155 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-13 09:50:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-13 09:50:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 09:50:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-13 09:50:12,180 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-13 09:50:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:12,181 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-13 09:50:12,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-13 09:50:12,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-13 09:50:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 09:50:12,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:12,183 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:12,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:50:12,183 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-13 09:50:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637994932] [2024-09-13 09:50:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:50:12,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637994932] [2024-09-13 09:50:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637994932] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344950643] [2024-09-13 09:50:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:12,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:12,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:12,363 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) [2024-09-13 09:50:12,364 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:50:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:12,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 09:50:12,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:50:12,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:50:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344950643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:12,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:12,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-13 09:50:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699263238] [2024-09-13 09:50:12,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:12,667 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 09:50:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 09:50:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-13 09:50:12,670 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 09:50:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:12,727 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-13 09:50:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 09:50:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-13 09:50:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:12,728 INFO L225 Difference]: With dead ends: 25 [2024-09-13 09:50:12,729 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 09:50:12,729 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-13 09:50:12,730 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:12,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 09:50:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 09:50:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 09:50:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-13 09:50:12,739 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-13 09:50:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:12,740 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-13 09:50:12,741 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 09:50:12,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-13 09:50:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 09:50:12,742 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:12,757 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:12,771 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:12,957 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:12,960 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:12,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-13 09:50:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378415333] [2024-09-13 09:50:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-13 09:50:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378415333] [2024-09-13 09:50:13,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378415333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156888789] [2024-09-13 09:50:13,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:50:13,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:13,119 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) [2024-09-13 09:50:13,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:50:13,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:50:13,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:13,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:50:13,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-13 09:50:13,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 09:50:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156888789] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:13,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-13 09:50:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206850778] [2024-09-13 09:50:13,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:13,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 09:50:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 09:50:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-13 09:50:13,439 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 09:50:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:13,496 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-13 09:50:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 09:50:13,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-13 09:50:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:13,498 INFO L225 Difference]: With dead ends: 28 [2024-09-13 09:50:13,498 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 09:50:13,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-13 09:50:13,500 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:13,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 09:50:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 09:50:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 09:50:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-13 09:50:13,508 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-13 09:50:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:13,509 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-13 09:50:13,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 09:50:13,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-13 09:50:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-13 09:50:13,510 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:13,510 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:13,523 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:13,714 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:13,715 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:13,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-13 09:50:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540866241] [2024-09-13 09:50:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 09:50:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540866241] [2024-09-13 09:50:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540866241] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293297366] [2024-09-13 09:50:13,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:50:13,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:13,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:13,905 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) [2024-09-13 09:50:13,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 09:50:13,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 09:50:13,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:13,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:50:13,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 09:50:13,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:50:14,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293297366] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:14,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:14,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-13 09:50:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551385332] [2024-09-13 09:50:14,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:14,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-13 09:50:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-13 09:50:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-13 09:50:14,450 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-13 09:50:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:14,509 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-13 09:50:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 09:50:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-13 09:50:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:14,510 INFO L225 Difference]: With dead ends: 31 [2024-09-13 09:50:14,510 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 09:50:14,511 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-13 09:50:14,511 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:14,512 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 09:50:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 09:50:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-13 09:50:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-13 09:50:14,517 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-13 09:50:14,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:14,517 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-13 09:50:14,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-13 09:50:14,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-13 09:50:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 09:50:14,521 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:14,523 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:14,537 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:14,726 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:14,727 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:14,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-13 09:50:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854546823] [2024-09-13 09:50:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 09:50:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854546823] [2024-09-13 09:50:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854546823] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385299926] [2024-09-13 09:50:14,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:50:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:14,943 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) [2024-09-13 09:50:14,944 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 09:50:14,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:50:14,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:14,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:50:14,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 09:50:15,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 09:50:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385299926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:15,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-13 09:50:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314159915] [2024-09-13 09:50:15,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:15,585 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 09:50:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 09:50:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-13 09:50:15,586 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-13 09:50:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:15,637 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-13 09:50:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:50:15,637 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-13 09:50:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:15,638 INFO L225 Difference]: With dead ends: 34 [2024-09-13 09:50:15,638 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 09:50:15,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-13 09:50:15,639 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:15,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 09:50:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 09:50:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 09:50:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-13 09:50:15,643 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-13 09:50:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:15,644 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-13 09:50:15,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-13 09:50:15,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-13 09:50:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 09:50:15,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:15,645 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:15,657 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 09:50:15,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:15,850 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:15,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-13 09:50:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939492565] [2024-09-13 09:50:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:15,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:15,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:15,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:15,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:16,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:16,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:16,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 09:50:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:16,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939492565] [2024-09-13 09:50:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939492565] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:16,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498928013] [2024-09-13 09:50:16,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 09:50:16,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:16,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:16,086 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) [2024-09-13 09:50:16,088 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 09:50:16,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-13 09:50:16,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:16,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 09:50:16,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 09:50:16,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 09:50:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498928013] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:17,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:17,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-13 09:50:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972603709] [2024-09-13 09:50:17,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:17,003 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 09:50:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 09:50:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:50:17,004 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 09:50:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:17,085 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-13 09:50:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 09:50:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-13 09:50:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:17,086 INFO L225 Difference]: With dead ends: 37 [2024-09-13 09:50:17,087 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 09:50:17,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-13 09:50:17,088 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:17,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 09:50:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 09:50:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 09:50:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-13 09:50:17,092 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-13 09:50:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:17,092 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-13 09:50:17,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 09:50:17,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-13 09:50:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 09:50:17,094 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:17,094 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:17,105 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 09:50:17,297 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 09:50:17,298 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:17,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-13 09:50:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:17,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072824104] [2024-09-13 09:50:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-13 09:50:17,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:17,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072824104] [2024-09-13 09:50:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072824104] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337581382] [2024-09-13 09:50:17,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 09:50:17,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:17,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:17,583 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) [2024-09-13 09:50:17,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 09:50:17,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-13 09:50:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:17,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 09:50:17,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-13 09:50:17,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 09:50:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337581382] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:18,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-13 09:50:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942112285] [2024-09-13 09:50:18,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:18,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 09:50:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 09:50:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-13 09:50:18,823 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-13 09:50:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:18,905 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-13 09:50:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 09:50:18,906 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-13 09:50:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:18,907 INFO L225 Difference]: With dead ends: 40 [2024-09-13 09:50:18,907 INFO L226 Difference]: Without dead ends: 36 [2024-09-13 09:50:18,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-13 09:50:18,908 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:18,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-13 09:50:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-13 09:50:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 09:50:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-13 09:50:18,916 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-13 09:50:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:18,916 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-13 09:50:18,916 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-13 09:50:18,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:18,917 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-13 09:50:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-13 09:50:18,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:18,919 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:18,931 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 09:50:19,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:19,120 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:19,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-13 09:50:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331040025] [2024-09-13 09:50:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-13 09:50:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331040025] [2024-09-13 09:50:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331040025] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564992097] [2024-09-13 09:50:19,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 09:50:19,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:19,423 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) [2024-09-13 09:50:19,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 09:50:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:19,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-13 09:50:19,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-13 09:50:19,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 09:50:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564992097] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:20,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-13 09:50:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946507150] [2024-09-13 09:50:20,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:20,908 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 09:50:20,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 09:50:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-13 09:50:20,909 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-13 09:50:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:20,986 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-13 09:50:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 09:50:20,986 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-13 09:50:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:20,987 INFO L225 Difference]: With dead ends: 43 [2024-09-13 09:50:20,987 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 09:50:20,987 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-13 09:50:20,988 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:20,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:50:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 09:50:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 09:50:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-13 09:50:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-13 09:50:20,992 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-13 09:50:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:20,993 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-13 09:50:20,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-13 09:50:20,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-13 09:50:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-13 09:50:20,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:20,994 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:21,006 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 09:50:21,194 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:21,195 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:21,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-13 09:50:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338991762] [2024-09-13 09:50:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-13 09:50:21,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:21,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338991762] [2024-09-13 09:50:21,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338991762] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:21,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851285535] [2024-09-13 09:50:21,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:50:21,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:21,537 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) [2024-09-13 09:50:21,538 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 09:50:21,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:50:21,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:21,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-13 09:50:21,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-13 09:50:21,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-13 09:50:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851285535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:23,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-13 09:50:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706849957] [2024-09-13 09:50:23,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:23,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 09:50:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 09:50:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:50:23,669 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-13 09:50:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:23,783 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-13 09:50:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 09:50:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-13 09:50:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:23,784 INFO L225 Difference]: With dead ends: 46 [2024-09-13 09:50:23,784 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 09:50:23,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:50:23,785 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:23,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 09:50:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-13 09:50:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-13 09:50:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-13 09:50:23,790 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-13 09:50:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:23,791 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-13 09:50:23,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-13 09:50:23,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-13 09:50:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-13 09:50:23,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:23,792 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:23,804 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:23,995 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:23,996 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:23,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-13 09:50:23,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:23,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047325638] [2024-09-13 09:50:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:23,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-13 09:50:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047325638] [2024-09-13 09:50:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047325638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806043271] [2024-09-13 09:50:24,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:50:24,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:24,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:24,378 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) [2024-09-13 09:50:24,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 09:50:24,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-13 09:50:24,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:24,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 09:50:24,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-13 09:50:24,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 09:50:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806043271] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:27,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:27,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-13 09:50:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839023002] [2024-09-13 09:50:27,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:27,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 09:50:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 09:50:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-13 09:50:27,126 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-13 09:50:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:27,235 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-13 09:50:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 09:50:27,235 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-13 09:50:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:27,236 INFO L225 Difference]: With dead ends: 49 [2024-09-13 09:50:27,236 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 09:50:27,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 09:50:27,237 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:27,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 09:50:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-13 09:50:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-13 09:50:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-13 09:50:27,242 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-13 09:50:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:27,242 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-13 09:50:27,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-13 09:50:27,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-13 09:50:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-13 09:50:27,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:27,243 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:27,256 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 09:50:27,447 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 09:50:27,448 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:27,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-13 09:50:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:27,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808152593] [2024-09-13 09:50:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-13 09:50:27,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808152593] [2024-09-13 09:50:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808152593] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203986428] [2024-09-13 09:50:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:50:27,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:27,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:27,900 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) [2024-09-13 09:50:27,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 09:50:28,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:50:28,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:28,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 09:50:28,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-13 09:50:28,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-13 09:50:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203986428] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:31,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-13 09:50:31,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419878687] [2024-09-13 09:50:31,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:31,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 09:50:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 09:50:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-13 09:50:31,717 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-13 09:50:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:31,835 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-13 09:50:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 09:50:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-13 09:50:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:31,838 INFO L225 Difference]: With dead ends: 52 [2024-09-13 09:50:31,838 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 09:50:31,839 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 09:50:31,839 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:31,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 09:50:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-13 09:50:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-13 09:50:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-13 09:50:31,848 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-13 09:50:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:31,849 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-13 09:50:31,849 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-13 09:50:31,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-13 09:50:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 09:50:31,850 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:31,858 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:31,872 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:32,060 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 09:50:32,060 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:32,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-13 09:50:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990414490] [2024-09-13 09:50:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:32,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-13 09:50:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990414490] [2024-09-13 09:50:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990414490] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902300822] [2024-09-13 09:50:32,586 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 09:50:32,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:32,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:32,589 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) [2024-09-13 09:50:32,590 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 09:50:32,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-13 09:50:32,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:32,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 09:50:32,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-13 09:50:32,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-13 09:50:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902300822] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:37,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:37,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-13 09:50:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862207815] [2024-09-13 09:50:37,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:37,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-13 09:50:37,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-13 09:50:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-13 09:50:37,509 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-13 09:50:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:37,644 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-13 09:50:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 09:50:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-13 09:50:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:37,645 INFO L225 Difference]: With dead ends: 55 [2024-09-13 09:50:37,645 INFO L226 Difference]: Without dead ends: 51 [2024-09-13 09:50:37,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 09:50:37,646 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:37,647 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-13 09:50:37,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-13 09:50:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-13 09:50:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-13 09:50:37,651 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-13 09:50:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:37,652 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-13 09:50:37,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-13 09:50:37,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-13 09:50:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-13 09:50:37,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:37,653 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:37,667 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 09:50:37,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:37,854 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:37,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-13 09:50:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511396489] [2024-09-13 09:50:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:37,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:37,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-13 09:50:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511396489] [2024-09-13 09:50:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511396489] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257886353] [2024-09-13 09:50:38,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 09:50:38,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:38,503 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) [2024-09-13 09:50:38,504 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 09:50:38,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-13 09:50:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:38,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 09:50:38,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-13 09:50:38,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-13 09:50:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257886353] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:44,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-13 09:50:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988515747] [2024-09-13 09:50:44,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:44,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 09:50:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 09:50:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:50:44,489 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-13 09:50:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:44,637 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-13 09:50:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 09:50:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-13 09:50:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:44,638 INFO L225 Difference]: With dead ends: 58 [2024-09-13 09:50:44,638 INFO L226 Difference]: Without dead ends: 54 [2024-09-13 09:50:44,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 09:50:44,639 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:44,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-13 09:50:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-13 09:50:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-13 09:50:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-13 09:50:44,643 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-13 09:50:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:44,644 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-13 09:50:44,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-13 09:50:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-13 09:50:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-13 09:50:44,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:44,645 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:44,659 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 09:50:44,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 09:50:44,846 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-13 09:50:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130785264] [2024-09-13 09:50:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:44,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:44,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-13 09:50:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:45,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130785264] [2024-09-13 09:50:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130785264] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341132407] [2024-09-13 09:50:45,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 09:50:45,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:45,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:45,514 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) [2024-09-13 09:50:45,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 09:50:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:45,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-13 09:50:45,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-13 09:50:45,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:50:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 09:50:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341132407] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:50:53,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:50:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-13 09:50:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632814453] [2024-09-13 09:50:53,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:50:53,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 09:50:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:50:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 09:50:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 09:50:53,183 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-13 09:50:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:50:53,328 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-13 09:50:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 09:50:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-13 09:50:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:50:53,329 INFO L225 Difference]: With dead ends: 61 [2024-09-13 09:50:53,329 INFO L226 Difference]: Without dead ends: 57 [2024-09-13 09:50:53,330 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 09:50:53,331 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:50:53,331 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:50:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-13 09:50:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-13 09:50:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-13 09:50:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-13 09:50:53,343 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-13 09:50:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:50:53,346 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-13 09:50:53,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-13 09:50:53,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-13 09:50:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-13 09:50:53,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:50:53,347 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:50:53,361 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 09:50:53,547 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 09:50:53,548 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:50:53,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:50:53,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-13 09:50:53,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:50:53,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964388318] [2024-09-13 09:50:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:50:53,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:50:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:50:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:50:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:53,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:50:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:50:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-13 09:50:54,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:50:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964388318] [2024-09-13 09:50:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964388318] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:50:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943443325] [2024-09-13 09:50:54,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:50:54,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:50:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:50:54,259 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) [2024-09-13 09:50:54,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 09:50:54,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:50:54,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:50:54,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 09:50:54,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:50:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-13 09:50:54,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:51:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-13 09:51:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943443325] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:51:03,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:51:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2024-09-13 09:51:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282569913] [2024-09-13 09:51:03,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:51:03,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 09:51:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:51:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 09:51:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 09:51:03,738 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-13 09:51:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:51:03,903 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-13 09:51:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 09:51:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 97 [2024-09-13 09:51:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:51:03,904 INFO L225 Difference]: With dead ends: 64 [2024-09-13 09:51:03,904 INFO L226 Difference]: Without dead ends: 60 [2024-09-13 09:51:03,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 09:51:03,905 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:51:03,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 148 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:51:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-13 09:51:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-13 09:51:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-13 09:51:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-13 09:51:03,912 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-13 09:51:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:51:03,912 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-13 09:51:03,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-13 09:51:03,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:51:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-13 09:51:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-13 09:51:03,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:51:03,913 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:51:03,928 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-13 09:51:04,119 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 09:51:04,119 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:51:04,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:51:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-13 09:51:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:51:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889231540] [2024-09-13 09:51:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:51:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:51:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:04,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:51:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:04,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:51:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:04,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:05,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:51:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:51:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-09-13 09:51:06,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:51:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889231540] [2024-09-13 09:51:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889231540] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:51:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314124367] [2024-09-13 09:51:06,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:51:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:51:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:51:06,420 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) [2024-09-13 09:51:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-13 09:51:06,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-13 09:51:06,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:51:07,002 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-13 09:51:07,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:51:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-09-13 09:51:07,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:51:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314124367] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:51:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 09:51:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2024-09-13 09:51:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983299172] [2024-09-13 09:51:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:51:07,174 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 09:51:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:51:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 09:51:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-13 09:51:07,174 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 09:51:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:51:07,221 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-13 09:51:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 09:51:07,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-13 09:51:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:51:07,222 INFO L225 Difference]: With dead ends: 60 [2024-09-13 09:51:07,222 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:51:07,222 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-13 09:51:07,223 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:51:07,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:51:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:51:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:51:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 09:51:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:51:07,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-09-13 09:51:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:51:07,224 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:51:07,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 09:51:07,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:51:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:51:07,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:51:07,227 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:51:07,243 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-13 09:51:07,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 09:51:07,430 INFO L408 BasicCegarLoop]: Path program histogram: [15, 1] [2024-09-13 09:51:07,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:51:07,782 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:51:07,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:51:07 BoogieIcfgContainer [2024-09-13 09:51:07,792 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:51:07,793 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:51:07,793 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:51:07,793 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:51:07,793 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:50:11" (3/4) ... [2024-09-13 09:51:07,794 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:51:07,797 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:51:07,797 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2024-09-13 09:51:07,797 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:51:07,799 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-13 09:51:07,799 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 09:51:07,799 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-13 09:51:07,800 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:51:07,863 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:51:07,863 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:51:07,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:51:07,864 INFO L158 Benchmark]: Toolchain (without parser) took 56586.07ms. Allocated memory was 163.6MB in the beginning and 809.5MB in the end (delta: 645.9MB). Free memory was 95.1MB in the beginning and 512.2MB in the end (delta: -417.1MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,864 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:51:07,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.27ms. Allocated memory is still 163.6MB. Free memory was 94.9MB in the beginning and 129.5MB in the end (delta: -34.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.14ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 128.3MB in the end (delta: 813.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,864 INFO L158 Benchmark]: Boogie Preprocessor took 23.76ms. Allocated memory is still 163.6MB. Free memory was 128.3MB in the beginning and 127.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,864 INFO L158 Benchmark]: RCFGBuilder took 228.40ms. Allocated memory is still 163.6MB. Free memory was 126.2MB in the beginning and 114.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,865 INFO L158 Benchmark]: TraceAbstraction took 56036.19ms. Allocated memory was 163.6MB in the beginning and 809.5MB in the end (delta: 645.9MB). Free memory was 113.6MB in the beginning and 516.4MB in the end (delta: -402.8MB). Peak memory consumption was 244.9MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,865 INFO L158 Benchmark]: Witness Printer took 70.70ms. Allocated memory is still 809.5MB. Free memory was 516.4MB in the beginning and 512.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:51:07,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.27ms. Allocated memory is still 163.6MB. Free memory was 94.9MB in the beginning and 129.5MB in the end (delta: -34.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.14ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 128.3MB in the end (delta: 813.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.76ms. Allocated memory is still 163.6MB. Free memory was 128.3MB in the beginning and 127.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 228.40ms. Allocated memory is still 163.6MB. Free memory was 126.2MB in the beginning and 114.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 56036.19ms. Allocated memory was 163.6MB in the beginning and 809.5MB in the end (delta: 645.9MB). Free memory was 113.6MB in the beginning and 516.4MB in the end (delta: -402.8MB). Peak memory consumption was 244.9MB. Max. memory is 16.1GB. * Witness Printer took 70.70ms. Allocated memory is still 809.5MB. Free memory was 516.4MB in the beginning and 512.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.6s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1144 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1333 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1223 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 192 mSDtfsCounter, 1223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2324 GetRequests, 1792 SyntacticMatches, 120 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 47.9s InterpolantComputationTime, 1843 NumberOfCodeBlocks, 1843 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 7780 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2970 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 45 InterpolantComputations, 2 PerfectInterpolantSequences, 5060/10830 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == (\old(n) + \old(m))) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:51:07,897 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE