./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.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 5189fb62 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/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --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-5189fb6-m [2024-09-13 03:06:36,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:06:36,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:06:36,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:06:36,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:06:36,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:06:36,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:06:36,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:06:36,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:06:36,501 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:06:36,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:06:36,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:06:36,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:06:36,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:06:36,502 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:06:36,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:06:36,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:06:36,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:06:36,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:06:36,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:06:36,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:06:36,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:06:36,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:06:36,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:06:36,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:06:36,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:06:36,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:06:36,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:06:36,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:06:36,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:06:36,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:06:36,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:06:36,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:06:36,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:06:36,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:06:36,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:06:36,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:06:36,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:06:36,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:06:36,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:06:36,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:06:36,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:06:36,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:06:36,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:06:36,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:06:36,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:06:36,730 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:06:36,731 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:06:36,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-13 03:06:37,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:06:38,092 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:06:38,092 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-13 03:06:38,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e904511ce/aed5b10140244dd6904acbc1787e0349/FLAGb815f9c0a [2024-09-13 03:06:38,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e904511ce/aed5b10140244dd6904acbc1787e0349 [2024-09-13 03:06:38,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:06:38,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:06:38,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:06:38,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:06:38,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:06:38,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b41d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38, skipping insertion in model container [2024-09-13 03:06:38,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:06:38,280 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/Ackermann03.c[1168,1181] [2024-09-13 03:06:38,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:06:38,298 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:06:38,312 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/Ackermann03.c[1168,1181] [2024-09-13 03:06:38,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:06:38,341 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:06:38,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38 WrapperNode [2024-09-13 03:06:38,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:06:38,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:06:38,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:06:38,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:06:38,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,360 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:06:38,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:06:38,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:06:38,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:06:38,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:06:38,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,379 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 03:06:38,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:06:38,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:06:38,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:06:38,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:06:38,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (1/1) ... [2024-09-13 03:06:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:06:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:38,408 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 03:06:38,411 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 03:06:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:06:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:06:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:06:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:06:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:06:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-13 03:06:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-13 03:06:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:06:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:06:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:06:38,504 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:06:38,506 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:06:38,607 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-13 03:06:38,607 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:06:38,625 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:06:38,625 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:06:38,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:38 BoogieIcfgContainer [2024-09-13 03:06:38,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:06:38,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:06:38,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:06:38,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:06:38,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:06:38" (1/3) ... [2024-09-13 03:06:38,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68736fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:06:38, skipping insertion in model container [2024-09-13 03:06:38,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:38" (2/3) ... [2024-09-13 03:06:38,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68736fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:06:38, skipping insertion in model container [2024-09-13 03:06:38,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:38" (3/3) ... [2024-09-13 03:06:38,634 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-09-13 03:06:38,652 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:06:38,652 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:06:38,698 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:06:38,705 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;@4967fca3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:06:38,706 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:06:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 03:06:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 03:06:38,722 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:38,722 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:38,723 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:38,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-13 03:06:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064015829] [2024-09-13 03:06:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:38,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:38,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:38,974 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 03:06:38,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064015829] [2024-09-13 03:06:38,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064015829] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:06:38,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:06:38,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:06:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027396479] [2024-09-13 03:06:38,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:06:38,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:06:38,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:39,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:06:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:06:39,010 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:06:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:39,138 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-13 03:06:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 03:06:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-13 03:06:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:39,147 INFO L225 Difference]: With dead ends: 55 [2024-09-13 03:06:39,147 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 03:06:39,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 03:06:39,157 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:39,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:06:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 03:06:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-13 03:06:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 03:06:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-13 03:06:39,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-13 03:06:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:39,233 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-13 03:06:39,238 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:06:39,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-13 03:06:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:06:39,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:39,245 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:39,245 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:06:39,245 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:39,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-13 03:06:39,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049705085] [2024-09-13 03:06:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:39,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:39,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:39,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:39,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049705085] [2024-09-13 03:06:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049705085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500474498] [2024-09-13 03:06:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:39,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:39,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:39,432 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 03:06:39,433 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 03:06:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:39,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 03:06:39,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:39,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:39,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500474498] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:39,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:39,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-13 03:06:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770256446] [2024-09-13 03:06:39,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:39,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 03:06:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 03:06:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-13 03:06:39,630 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 03:06:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:39,799 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-13 03:06:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 03:06:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-13 03:06:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:39,803 INFO L225 Difference]: With dead ends: 83 [2024-09-13 03:06:39,803 INFO L226 Difference]: Without dead ends: 59 [2024-09-13 03:06:39,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-13 03:06:39,806 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:39,807 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:06:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-13 03:06:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-13 03:06:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-13 03:06:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-13 03:06:39,831 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-13 03:06:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:39,831 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-13 03:06:39,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 03:06:39,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-13 03:06:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-13 03:06:39,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:39,834 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:39,849 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 03:06:40,037 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 03:06:40,037 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:40,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-13 03:06:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669166515] [2024-09-13 03:06:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 03:06:40,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669166515] [2024-09-13 03:06:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669166515] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766286246] [2024-09-13 03:06:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:40,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:40,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:40,349 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 03:06:40,350 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 03:06:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:40,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:06:40,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-13 03:06:40,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 03:06:40,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766286246] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:40,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-13 03:06:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183014536] [2024-09-13 03:06:40,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:40,867 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 03:06:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 03:06:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-13 03:06:40,868 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 03:06:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:40,972 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-13 03:06:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:06:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-13 03:06:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:40,974 INFO L225 Difference]: With dead ends: 123 [2024-09-13 03:06:40,974 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 03:06:40,976 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-13 03:06:40,980 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:40,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:06:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 03:06:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-13 03:06:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-13 03:06:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-13 03:06:40,996 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-13 03:06:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:40,997 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-13 03:06:40,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 03:06:40,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-13 03:06:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-13 03:06:41,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:41,007 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:41,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 03:06:41,207 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 03:06:41,208 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:41,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-13 03:06:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538219961] [2024-09-13 03:06:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:41,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 03:06:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-13 03:06:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538219961] [2024-09-13 03:06:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538219961] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486686963] [2024-09-13 03:06:41,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:06:41,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:41,697 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 03:06:41,699 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 03:06:41,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:06:41,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:41,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 03:06:41,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-13 03:06:41,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 03:06:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486686963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:43,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-13 03:06:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41671890] [2024-09-13 03:06:43,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:43,021 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 03:06:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 03:06:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-13 03:06:43,022 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 03:06:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:43,388 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-13 03:06:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 03:06:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-13 03:06:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:43,391 INFO L225 Difference]: With dead ends: 122 [2024-09-13 03:06:43,391 INFO L226 Difference]: Without dead ends: 74 [2024-09-13 03:06:43,397 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 03:06:43,397 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:43,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 192 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:06:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-13 03:06:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-13 03:06:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 03:06:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-13 03:06:43,408 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-13 03:06:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:43,408 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-13 03:06:43,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 03:06:43,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-13 03:06:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-13 03:06:43,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:43,410 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:43,423 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 03:06:43,614 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 03:06:43,614 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:43,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-13 03:06:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553569390] [2024-09-13 03:06:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-13 03:06:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-13 03:06:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553569390] [2024-09-13 03:06:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553569390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138655296] [2024-09-13 03:06:44,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:06:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:44,123 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 03:06:44,124 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 03:06:44,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-13 03:06:44,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:44,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 03:06:44,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-13 03:06:44,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-13 03:06:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138655296] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:45,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-13 03:06:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564196677] [2024-09-13 03:06:45,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:45,211 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:06:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:06:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:06:45,213 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-13 03:06:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:45,658 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-13 03:06:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 03:06:45,659 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-13 03:06:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:45,661 INFO L225 Difference]: With dead ends: 122 [2024-09-13 03:06:45,661 INFO L226 Difference]: Without dead ends: 67 [2024-09-13 03:06:45,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 03:06:45,662 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:45,663 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 240 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:06:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-13 03:06:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-13 03:06:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-13 03:06:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-13 03:06:45,671 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-13 03:06:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:45,671 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-13 03:06:45,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-13 03:06:45,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-13 03:06:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-13 03:06:45,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:45,673 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:45,688 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 03:06:45,877 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 03:06:45,877 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:45,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-13 03:06:45,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:45,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192882553] [2024-09-13 03:06:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 03:06:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-13 03:06:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 03:06:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-13 03:06:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-13 03:06:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192882553] [2024-09-13 03:06:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192882553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14989851] [2024-09-13 03:06:46,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:06:46,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:46,628 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 03:06:46,629 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 03:06:46,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:06:46,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:46,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-13 03:06:46,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 282 proven. 646 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2024-09-13 03:06:46,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 284 proven. 692 refuted. 0 times theorem prover too weak. 1646 trivial. 0 not checked. [2024-09-13 03:06:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14989851] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:48,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 11] total 27 [2024-09-13 03:06:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915037965] [2024-09-13 03:06:48,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:48,609 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 03:06:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:48,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 03:06:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-09-13 03:06:48,610 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-13 03:06:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:49,470 INFO L93 Difference]: Finished difference Result 198 states and 405 transitions. [2024-09-13 03:06:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-13 03:06:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 227 [2024-09-13 03:06:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:49,472 INFO L225 Difference]: With dead ends: 198 [2024-09-13 03:06:49,472 INFO L226 Difference]: Without dead ends: 73 [2024-09-13 03:06:49,478 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 504 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1247, Invalid=5073, Unknown=0, NotChecked=0, Total=6320 [2024-09-13 03:06:49,479 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:49,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 266 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:06:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-13 03:06:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-09-13 03:06:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 03:06:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-13 03:06:49,488 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 227 [2024-09-13 03:06:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:49,488 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-13 03:06:49,488 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-13 03:06:49,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-13 03:06:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-13 03:06:49,490 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:49,490 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:49,503 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 03:06:49,690 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 03:06:49,690 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:49,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-13 03:06:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806420331] [2024-09-13 03:06:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:49,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:49,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:06:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-13 03:06:50,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:50,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806420331] [2024-09-13 03:06:50,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806420331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:50,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290428872] [2024-09-13 03:06:50,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:06:50,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:50,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:50,537 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 03:06:50,541 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 03:06:50,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-13 03:06:50,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:50,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 03:06:50,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-13 03:06:50,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-13 03:06:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290428872] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:53,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-13 03:06:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999177852] [2024-09-13 03:06:53,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:53,673 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-13 03:06:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-13 03:06:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 03:06:53,674 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-13 03:06:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:54,284 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2024-09-13 03:06:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-13 03:06:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-13 03:06:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:54,287 INFO L225 Difference]: With dead ends: 143 [2024-09-13 03:06:54,287 INFO L226 Difference]: Without dead ends: 86 [2024-09-13 03:06:54,290 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2024-09-13 03:06:54,291 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:54,291 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 350 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:06:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-13 03:06:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2024-09-13 03:06:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (23), 16 states have call predecessors, (23), 12 states have call successors, (23) [2024-09-13 03:06:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-09-13 03:06:54,314 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 160 [2024-09-13 03:06:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:54,314 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-09-13 03:06:54,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-13 03:06:54,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-09-13 03:06:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-13 03:06:54,318 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:54,318 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:54,331 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 03:06:54,518 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 03:06:54,519 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:54,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 6 times [2024-09-13 03:06:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741722168] [2024-09-13 03:06:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:54,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:06:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:06:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-13 03:06:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741722168] [2024-09-13 03:06:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741722168] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:55,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293323823] [2024-09-13 03:06:55,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:06:55,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:55,341 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 03:06:55,343 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 03:06:55,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-13 03:06:55,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:55,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 03:06:55,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-13 03:06:55,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-13 03:06:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293323823] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:58,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-13 03:06:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644964131] [2024-09-13 03:06:58,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:58,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 03:06:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 03:06:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 03:06:58,488 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-13 03:06:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:59,002 INFO L93 Difference]: Finished difference Result 161 states and 212 transitions. [2024-09-13 03:06:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-13 03:06:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-13 03:06:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:59,004 INFO L225 Difference]: With dead ends: 161 [2024-09-13 03:06:59,004 INFO L226 Difference]: Without dead ends: 99 [2024-09-13 03:06:59,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=3764, Unknown=0, NotChecked=0, Total=4692 [2024-09-13 03:06:59,007 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:59,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 293 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:06:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-13 03:06:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2024-09-13 03:06:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (27), 18 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-13 03:06:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-09-13 03:06:59,017 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 173 [2024-09-13 03:06:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:59,018 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-09-13 03:06:59,018 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-13 03:06:59,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-09-13 03:06:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-13 03:06:59,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:59,020 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:59,034 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 03:06:59,223 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 03:06:59,223 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:59,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 7 times [2024-09-13 03:06:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239548357] [2024-09-13 03:06:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:06:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:59,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-13 03:07:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239548357] [2024-09-13 03:07:00,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239548357] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481783984] [2024-09-13 03:07:00,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:07:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:00,215 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 03:07:00,215 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 03:07:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:00,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-13 03:07:00,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-13 03:07:00,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-13 03:07:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481783984] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:01,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2024-09-13 03:07:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788790114] [2024-09-13 03:07:01,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:01,307 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 03:07:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 03:07:01,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 03:07:01,308 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-13 03:07:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:03,135 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2024-09-13 03:07:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-13 03:07:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 186 [2024-09-13 03:07:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:03,137 INFO L225 Difference]: With dead ends: 149 [2024-09-13 03:07:03,137 INFO L226 Difference]: Without dead ends: 133 [2024-09-13 03:07:03,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=883, Invalid=6257, Unknown=0, NotChecked=0, Total=7140 [2024-09-13 03:07:03,139 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:03,140 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 608 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 03:07:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-13 03:07:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2024-09-13 03:07:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-09-13 03:07:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-09-13 03:07:03,158 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 186 [2024-09-13 03:07:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:03,159 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-09-13 03:07:03,159 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-13 03:07:03,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-09-13 03:07:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-09-13 03:07:03,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:03,162 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:03,175 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 03:07:03,365 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 03:07:03,365 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:03,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash 296710076, now seen corresponding path program 8 times [2024-09-13 03:07:03,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:03,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556873866] [2024-09-13 03:07:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:07:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:07:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:07:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 03:07:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2024-09-13 03:07:04,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556873866] [2024-09-13 03:07:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556873866] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197592079] [2024-09-13 03:07:04,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:07:04,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:04,421 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 03:07:04,422 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 03:07:04,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:07:04,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:04,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 03:07:04,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-09-13 03:07:04,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-13 03:07:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197592079] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:08,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2024-09-13 03:07:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021259783] [2024-09-13 03:07:08,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:08,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-13 03:07:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-13 03:07:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 03:07:08,500 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-13 03:07:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:09,028 INFO L93 Difference]: Finished difference Result 211 states and 289 transitions. [2024-09-13 03:07:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 03:07:09,029 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) Word has length 199 [2024-09-13 03:07:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:09,031 INFO L225 Difference]: With dead ends: 211 [2024-09-13 03:07:09,031 INFO L226 Difference]: Without dead ends: 130 [2024-09-13 03:07:09,032 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 427 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-09-13 03:07:09,033 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:09,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 407 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:07:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-13 03:07:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-09-13 03:07:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 18 states have call successors, (18), 8 states have call predecessors, (18), 15 states have return successors, (40), 24 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-13 03:07:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-09-13 03:07:09,050 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 199 [2024-09-13 03:07:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:09,050 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-09-13 03:07:09,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-13 03:07:09,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-09-13 03:07:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-13 03:07:09,053 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:09,053 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:09,066 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:09,253 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 03:07:09,253 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:09,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 62516586, now seen corresponding path program 9 times [2024-09-13 03:07:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858722396] [2024-09-13 03:07:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:07:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:07:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-13 03:07:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 03:07:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-09-13 03:07:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858722396] [2024-09-13 03:07:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858722396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872856669] [2024-09-13 03:07:09,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:07:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:09,912 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 03:07:09,914 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 03:07:10,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-13 03:07:10,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:10,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-13 03:07:10,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-13 03:07:10,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-09-13 03:07:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872856669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:11,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-09-13 03:07:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248550536] [2024-09-13 03:07:11,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:11,785 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:07:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:07:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:07:11,786 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-13 03:07:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:12,061 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2024-09-13 03:07:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 03:07:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) Word has length 212 [2024-09-13 03:07:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:12,063 INFO L225 Difference]: With dead ends: 186 [2024-09-13 03:07:12,063 INFO L226 Difference]: Without dead ends: 100 [2024-09-13 03:07:12,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 467 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 03:07:12,065 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:12,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 299 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:07:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-13 03:07:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-09-13 03:07:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 58 states have internal predecessors, (64), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2024-09-13 03:07:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-09-13 03:07:12,080 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 212 [2024-09-13 03:07:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:12,080 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-09-13 03:07:12,081 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-13 03:07:12,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-09-13 03:07:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-13 03:07:12,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:12,083 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:12,099 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 03:07:12,283 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 03:07:12,284 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:12,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1614501087, now seen corresponding path program 10 times [2024-09-13 03:07:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:12,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029789376] [2024-09-13 03:07:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:07:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:07:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:07:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-13 03:07:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 03:07:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2024-09-13 03:07:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029789376] [2024-09-13 03:07:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029789376] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385486041] [2024-09-13 03:07:12,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:07:12,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:12,805 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 03:07:12,808 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 03:07:13,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:07:13,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:13,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:07:13,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2024-09-13 03:07:13,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2024-09-13 03:07:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385486041] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:13,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2024-09-13 03:07:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024992618] [2024-09-13 03:07:13,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:13,784 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 03:07:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:13,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 03:07:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-09-13 03:07:13,785 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 03:07:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:13,883 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2024-09-13 03:07:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 03:07:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) Word has length 284 [2024-09-13 03:07:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:13,885 INFO L225 Difference]: With dead ends: 92 [2024-09-13 03:07:13,885 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:07:13,886 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 642 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-09-13 03:07:13,886 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:13,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:07:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:07:13,887 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 03:07:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:07:13,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2024-09-13 03:07:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:13,888 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:07:13,888 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 03:07:13,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:07:13,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:07:13,891 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:07:13,909 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 03:07:14,091 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 03:07:14,094 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-09-13 03:07:14,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:07:48,872 WARN L293 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 225 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-13 03:07:55,768 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 202 DAG size of output: 184 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-13 03:08:09,856 WARN L293 SmtUtils]: Spent 13.07s on a formula simplification. DAG size of input: 210 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-13 03:08:22,581 WARN L293 SmtUtils]: Spent 12.64s on a formula simplification. DAG size of input: 206 DAG size of output: 279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-13 03:08:27,565 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:08:27,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:08:27 BoogieIcfgContainer [2024-09-13 03:08:27,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:08:27,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:08:27,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:08:27,588 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:08:27,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:38" (3/4) ... [2024-09-13 03:08:27,590 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:08:27,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:08:27,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2024-09-13 03:08:27,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:08:27,595 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-09-13 03:08:27,595 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 03:08:27,595 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-13 03:08:27,595 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:08:27,662 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:08:27,662 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:08:27,662 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:08:27,663 INFO L158 Benchmark]: Toolchain (without parser) took 109548.25ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,663 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:08:27,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.13ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 71.5MB in the beginning and 165.0MB in the end (delta: -93.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,663 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.20ms. Allocated memory is still 192.9MB. Free memory was 165.0MB in the beginning and 164.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:08:27,664 INFO L158 Benchmark]: Boogie Preprocessor took 23.66ms. Allocated memory is still 192.9MB. Free memory was 164.0MB in the beginning and 161.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,664 INFO L158 Benchmark]: RCFGBuilder took 241.23ms. Allocated memory is still 192.9MB. Free memory was 161.9MB in the beginning and 148.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,664 INFO L158 Benchmark]: TraceAbstraction took 108958.86ms. Allocated memory was 192.9MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 148.3MB in the beginning and 1.1GB in the end (delta: -938.1MB). Peak memory consumption was 738.7MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,664 INFO L158 Benchmark]: Witness Printer took 74.16ms. Allocated memory is still 1.2GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 03:08:27,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.13ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 71.5MB in the beginning and 165.0MB in the end (delta: -93.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.20ms. Allocated memory is still 192.9MB. Free memory was 165.0MB in the beginning and 164.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.66ms. Allocated memory is still 192.9MB. Free memory was 164.0MB in the beginning and 161.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 241.23ms. Allocated memory is still 192.9MB. Free memory was 161.9MB in the beginning and 148.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 108958.86ms. Allocated memory was 192.9MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 148.3MB in the beginning and 1.1GB in the end (delta: -938.1MB). Peak memory consumption was 738.7MB. Max. memory is 16.1GB. * Witness Printer took 74.16ms. Allocated memory is still 1.2GB. Free memory was 1.1GB in the beginning and 1.1GB 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: 45]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.4s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 615 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2713 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7234 IncrementalHoareTripleChecker+Invalid, 7935 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 369 mSDtfsCounter, 7234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4363 GetRequests, 3743 SyntacticMatches, 92 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7590 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=10, InterpolantAutomatonStates: 332, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 172 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 3417 NumberOfCodeBlocks, 3277 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 5084 ConstructedInterpolants, 0 QuantifiedInterpolants, 9354 SizeOfPredicates, 48 NumberOfNonLiveVariables, 4685 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 34 InterpolantComputations, 1 PerfectInterpolantSequences, 39778/49815 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: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((((((((((((((\result == 5) && (\old(n) == 3)) || (((\result == 3) && (\old(n) == 1)) && (\old(m) == 1))) || (\old(m) == 0)) || (((2 <= \old(m)) && (3 <= \old(n))) && (5 <= \result))) || (((\old(n) == 0) && (\result == 2)) && (\old(m) == 1))) || (((2 <= \old(m)) && (2 <= \old(n))) && (\result == 7))) || ((\result == 5) && (\old(n) == 1))) || (((\result == 7) && (5 <= \old(n))) && (\old(m) == 1))) || (((\old(n) == 0) && (2 <= \old(m))) && (\result == 3))) || ((\result == 6) && (\old(n) == 4))) || (((5 <= \result) && (6 <= \old(n))) && (\old(m) == 1))) || (((\result == 4) && (\old(n) == 2)) && (\old(m) == 1))) || ((3 <= \old(m)) && (3 <= \result))) && ((0 < \old(m)) || (\result == ((long long) \old(n) + 1)))) && (((((\result == 3) && (\old(m) == 1)) || (1 < \old(m))) || (\result == 2)) || (\old(n) != 1))) && (((\old(m) == 0) || (\old(n) == 0)) || (0 < \old(n)))) RESULT: Ultimate proved your program to be correct! [2024-09-13 03:08:27,688 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