./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.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 a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:31:25,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:31:25,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:31:25,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:31:25,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:31:25,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:31:25,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:31:25,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:31:25,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:31:25,950 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:31:25,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:31:25,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:31:25,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:31:25,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:31:25,953 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:31:25,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:31:25,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:31:25,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:31:25,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:31:25,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:31:25,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:31:25,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:31:25,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:31:25,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:31:25,955 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:31:25,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:31:25,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:31:25,956 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:31:25,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:31:25,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:31:25,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:31:25,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:31:25,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:31:25,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:31:25,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:31:25,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:31:25,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:31:26,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:31:26,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:31:26,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:31:26,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:31:26,162 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:31:26,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2024-09-11 19:31:27,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:31:27,597 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:31:27,597 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2024-09-11 19:31:27,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0dd0601cb/5e5f8bc293714fad8d2279437e7ff382/FLAG1562668ad [2024-09-11 19:31:28,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0dd0601cb/5e5f8bc293714fad8d2279437e7ff382 [2024-09-11 19:31:28,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:31:28,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:31:28,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:31:28,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:31:28,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:31:28,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47eb5e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28, skipping insertion in model container [2024-09-11 19:31:28,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:31:28,164 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/loops-crafted-1/mono-crafted_6.c[318,331] [2024-09-11 19:31:28,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:31:28,190 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:31:28,201 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/loops-crafted-1/mono-crafted_6.c[318,331] [2024-09-11 19:31:28,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:31:28,218 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:31:28,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28 WrapperNode [2024-09-11 19:31:28,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:31:28,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:31:28,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:31:28,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:31:28,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,247 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2024-09-11 19:31:28,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:31:28,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:31:28,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:31:28,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:31:28,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,267 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 19:31:28,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:31:28,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:31:28,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:31:28,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:31:28,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (1/1) ... [2024-09-11 19:31:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:31:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:28,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 19:31:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 19:31:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:31:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:31:28,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:31:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:31:28,405 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:31:28,407 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:31:28,495 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 19:31:28,495 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:31:28,519 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:31:28,520 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:31:28,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:31:28 BoogieIcfgContainer [2024-09-11 19:31:28,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:31:28,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:31:28,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:31:28,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:31:28,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:31:28" (1/3) ... [2024-09-11 19:31:28,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd7afae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:31:28, skipping insertion in model container [2024-09-11 19:31:28,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:31:28" (2/3) ... [2024-09-11 19:31:28,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd7afae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:31:28, skipping insertion in model container [2024-09-11 19:31:28,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:31:28" (3/3) ... [2024-09-11 19:31:28,528 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2024-09-11 19:31:28,541 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:31:28,542 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:31:28,587 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:31:28,593 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;@1d65b85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:31:28,593 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:31:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:31:28,608 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:28,608 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:31:28,609 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:28,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 68636575, now seen corresponding path program 1 times [2024-09-11 19:31:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009895830] [2024-09-11 19:31:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:28,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:28,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009895830] [2024-09-11 19:31:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009895830] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:31:28,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:31:28,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:31:28,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097706370] [2024-09-11 19:31:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:31:28,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:31:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:31:28,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:31:28,797 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:28,823 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2024-09-11 19:31:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:31:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-11 19:31:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:28,830 INFO L225 Difference]: With dead ends: 23 [2024-09-11 19:31:28,831 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:31:28,833 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:31:28,835 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:28,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:31:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:31:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-09-11 19:31:28,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2024-09-11 19:31:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:28,859 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-09-11 19:31:28,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:28,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-09-11 19:31:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:31:28,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:28,860 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:28,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:31:28,861 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:28,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1578908930, now seen corresponding path program 1 times [2024-09-11 19:31:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505165185] [2024-09-11 19:31:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505165185] [2024-09-11 19:31:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505165185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692533164] [2024-09-11 19:31:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:28,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:28,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:28,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:31:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:29,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:31:29,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:29,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692533164] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:29,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-11 19:31:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500905231] [2024-09-11 19:31:29,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:29,098 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:31:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:31:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:31:29,099 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:29,142 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2024-09-11 19:31:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:31:29,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-11 19:31:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:29,144 INFO L225 Difference]: With dead ends: 25 [2024-09-11 19:31:29,144 INFO L226 Difference]: Without dead ends: 17 [2024-09-11 19:31:29,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:31:29,146 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:29,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-11 19:31:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-09-11 19:31:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-09-11 19:31:29,153 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2024-09-11 19:31:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:29,153 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-09-11 19:31:29,153 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-09-11 19:31:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:31:29,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:29,154 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:29,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:31:29,359 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 [2024-09-11 19:31:29,359 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:29,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash -266815252, now seen corresponding path program 1 times [2024-09-11 19:31:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:29,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958564896] [2024-09-11 19:31:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958564896] [2024-09-11 19:31:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958564896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222219754] [2024-09-11 19:31:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:29,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:29,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:29,458 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:31:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:29,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:31:29,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:29,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:31:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222219754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:29,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-11 19:31:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18366939] [2024-09-11 19:31:29,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:29,568 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:31:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:31:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:31:29,569 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:29,624 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-09-11 19:31:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:31:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-09-11 19:31:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:29,626 INFO L225 Difference]: With dead ends: 38 [2024-09-11 19:31:29,626 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 19:31:29,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:31:29,628 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:29,629 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 13 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 19:31:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-11 19:31:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-11 19:31:29,636 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 13 [2024-09-11 19:31:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:29,636 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-11 19:31:29,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:29,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-11 19:31:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:31:29,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:29,638 INFO L216 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:29,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:31:29,838 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 [2024-09-11 19:31:29,839 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:29,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1626016234, now seen corresponding path program 1 times [2024-09-11 19:31:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:29,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086772386] [2024-09-11 19:31:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086772386] [2024-09-11 19:31:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086772386] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214948312] [2024-09-11 19:31:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:29,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:29,958 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:31:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:29,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:31:29,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:30,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:30,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214948312] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:30,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:30,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-11 19:31:30,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742720411] [2024-09-11 19:31:30,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:30,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:31:30,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:31:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:31:30,062 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:30,105 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-09-11 19:31:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:31:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-09-11 19:31:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:30,106 INFO L225 Difference]: With dead ends: 59 [2024-09-11 19:31:30,108 INFO L226 Difference]: Without dead ends: 38 [2024-09-11 19:31:30,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:31:30,109 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:30,109 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:31:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-11 19:31:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-11 19:31:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-11 19:31:30,119 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2024-09-11 19:31:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:30,119 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-11 19:31:30,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-11 19:31:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:31:30,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:30,121 INFO L216 NwaCegarLoop]: trace histogram [12, 8, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:30,133 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:31:30,321 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 [2024-09-11 19:31:30,322 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:30,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:30,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1656537113, now seen corresponding path program 2 times [2024-09-11 19:31:30,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:30,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424949370] [2024-09-11 19:31:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:30,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424949370] [2024-09-11 19:31:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424949370] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186914630] [2024-09-11 19:31:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:31:30,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:30,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:30,568 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:31:30,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:31:30,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:30,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:31:30,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:30,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186914630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:30,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-09-11 19:31:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750196865] [2024-09-11 19:31:30,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:30,817 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:31:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:31:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:31:30,818 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:30,897 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2024-09-11 19:31:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:31:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-09-11 19:31:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:30,899 INFO L225 Difference]: With dead ends: 79 [2024-09-11 19:31:30,899 INFO L226 Difference]: Without dead ends: 58 [2024-09-11 19:31:30,899 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:31:30,900 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:30,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-11 19:31:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-09-11 19:31:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2024-09-11 19:31:30,913 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 37 [2024-09-11 19:31:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:30,914 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2024-09-11 19:31:30,914 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:30,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2024-09-11 19:31:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-11 19:31:30,915 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:30,915 INFO L216 NwaCegarLoop]: trace histogram [22, 18, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:30,929 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:31,119 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 [2024-09-11 19:31:31,119 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:31,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -28340169, now seen corresponding path program 3 times [2024-09-11 19:31:31,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:31,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994780207] [2024-09-11 19:31:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:31,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:31:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994780207] [2024-09-11 19:31:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994780207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904898518] [2024-09-11 19:31:31,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:31:31,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:31,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:31,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:31,578 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:31:31,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:31:31,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:31,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:31:31,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-09-11 19:31:31,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-09-11 19:31:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904898518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:31,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4, 4] total 25 [2024-09-11 19:31:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509718296] [2024-09-11 19:31:31,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:31,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:31:31,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:31:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:31:31,716 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:31,803 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2024-09-11 19:31:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:31:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-09-11 19:31:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:31,805 INFO L225 Difference]: With dead ends: 93 [2024-09-11 19:31:31,807 INFO L226 Difference]: Without dead ends: 72 [2024-09-11 19:31:31,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:31:31,808 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:31,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-11 19:31:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-11 19:31:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2024-09-11 19:31:31,817 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 57 [2024-09-11 19:31:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:31,817 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2024-09-11 19:31:31,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:31,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2024-09-11 19:31:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-11 19:31:31,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:31,819 INFO L216 NwaCegarLoop]: trace histogram [26, 19, 7, 7, 4, 3, 1, 1, 1, 1, 1] [2024-09-11 19:31:31,831 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:31:32,019 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 [2024-09-11 19:31:32,020 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:32,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash -786335249, now seen corresponding path program 4 times [2024-09-11 19:31:32,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:32,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762582442] [2024-09-11 19:31:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:31:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762582442] [2024-09-11 19:31:32,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762582442] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671346761] [2024-09-11 19:31:32,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:31:32,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:32,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:32,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:31:32,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:31:32,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:32,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 19:31:32,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:31:32,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:31:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671346761] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:33,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2024-09-11 19:31:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507745089] [2024-09-11 19:31:33,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:33,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-11 19:31:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-11 19:31:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:31:33,054 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:33,154 INFO L93 Difference]: Finished difference Result 147 states and 190 transitions. [2024-09-11 19:31:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-11 19:31:33,154 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-09-11 19:31:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:33,155 INFO L225 Difference]: With dead ends: 147 [2024-09-11 19:31:33,155 INFO L226 Difference]: Without dead ends: 114 [2024-09-11 19:31:33,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:31:33,157 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:33,157 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-11 19:31:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-09-11 19:31:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2024-09-11 19:31:33,179 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 71 [2024-09-11 19:31:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:33,179 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2024-09-11 19:31:33,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:33,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2024-09-11 19:31:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-11 19:31:33,181 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:33,181 INFO L216 NwaCegarLoop]: trace histogram [47, 40, 7, 7, 4, 3, 1, 1, 1, 1, 1] [2024-09-11 19:31:33,194 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:33,381 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 [2024-09-11 19:31:33,382 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:33,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2049214002, now seen corresponding path program 5 times [2024-09-11 19:31:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:33,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526620856] [2024-09-11 19:31:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:33,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 533 proven. 1640 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:31:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526620856] [2024-09-11 19:31:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526620856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355474596] [2024-09-11 19:31:34,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:31:34,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:34,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:34,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:34,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:31:34,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-11 19:31:34,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:34,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:31:34,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1292 proven. 389 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-09-11 19:31:35,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1292 proven. 389 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-09-11 19:31:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355474596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:36,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 22, 22] total 83 [2024-09-11 19:31:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618510706] [2024-09-11 19:31:36,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:36,490 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-11 19:31:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-11 19:31:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2024-09-11 19:31:36,495 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:36,896 INFO L93 Difference]: Finished difference Result 297 states and 394 transitions. [2024-09-11 19:31:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-11 19:31:36,899 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-09-11 19:31:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:36,901 INFO L225 Difference]: With dead ends: 297 [2024-09-11 19:31:36,901 INFO L226 Difference]: Without dead ends: 264 [2024-09-11 19:31:36,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2024-09-11 19:31:36,903 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 155 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:36,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 60 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:31:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-11 19:31:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-11 19:31:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.1863117870722433) internal successors, (312), 263 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 312 transitions. [2024-09-11 19:31:36,925 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 312 transitions. Word has length 113 [2024-09-11 19:31:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:36,925 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 312 transitions. [2024-09-11 19:31:36,926 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:36,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 312 transitions. [2024-09-11 19:31:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-09-11 19:31:36,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:36,931 INFO L216 NwaCegarLoop]: trace histogram [85, 44, 44, 41, 40, 4, 1, 1, 1, 1, 1] [2024-09-11 19:31:36,946 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:31:37,131 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 [2024-09-11 19:31:37,132 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1603846910, now seen corresponding path program 6 times [2024-09-11 19:31:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646093473] [2024-09-11 19:31:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 3654 proven. 1722 refuted. 0 times theorem prover too weak. 3741 trivial. 0 not checked. [2024-09-11 19:31:38,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646093473] [2024-09-11 19:31:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646093473] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288045768] [2024-09-11 19:31:38,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:31:38,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:38,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:38,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:38,697 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:31:38,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-11 19:31:38,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:38,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:31:38,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 1084 proven. 32 refuted. 0 times theorem prover too weak. 8001 trivial. 0 not checked. [2024-09-11 19:31:38,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 1084 proven. 32 refuted. 0 times theorem prover too weak. 8001 trivial. 0 not checked. [2024-09-11 19:31:39,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288045768] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:39,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:39,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 7, 7] total 54 [2024-09-11 19:31:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470054865] [2024-09-11 19:31:39,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:39,068 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:31:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:31:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:31:39,070 INFO L87 Difference]: Start difference. First operand 264 states and 312 transitions. Second operand has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:39,230 INFO L93 Difference]: Finished difference Result 471 states and 586 transitions. [2024-09-11 19:31:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-11 19:31:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-09-11 19:31:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:39,232 INFO L225 Difference]: With dead ends: 471 [2024-09-11 19:31:39,233 INFO L226 Difference]: Without dead ends: 290 [2024-09-11 19:31:39,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:31:39,235 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:39,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:31:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-09-11 19:31:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-09-11 19:31:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.2110726643598615) internal successors, (350), 289 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2024-09-11 19:31:39,259 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 263 [2024-09-11 19:31:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:39,259 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2024-09-11 19:31:39,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:39,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2024-09-11 19:31:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-09-11 19:31:39,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:39,263 INFO L216 NwaCegarLoop]: trace histogram [92, 50, 50, 42, 40, 10, 1, 1, 1, 1, 1] [2024-09-11 19:31:39,275 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:31:39,463 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 [2024-09-11 19:31:39,464 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1433056971, now seen corresponding path program 7 times [2024-09-11 19:31:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:39,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459911958] [2024-09-11 19:31:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:39,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459911958] [2024-09-11 19:31:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459911958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249750773] [2024-09-11 19:31:41,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:31:41,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:41,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:41,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:41,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:31:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:41,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-11 19:31:41,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:41,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249750773] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:42,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:42,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 88 [2024-09-11 19:31:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860318684] [2024-09-11 19:31:42,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:42,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-11 19:31:42,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-11 19:31:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2024-09-11 19:31:42,935 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:43,136 INFO L93 Difference]: Finished difference Result 583 states and 747 transitions. [2024-09-11 19:31:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-11 19:31:43,137 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2024-09-11 19:31:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:43,138 INFO L225 Difference]: With dead ends: 583 [2024-09-11 19:31:43,138 INFO L226 Difference]: Without dead ends: 378 [2024-09-11 19:31:43,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2024-09-11 19:31:43,141 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:43,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:31:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-09-11 19:31:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2024-09-11 19:31:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.1618037135278514) internal successors, (438), 377 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 438 transitions. [2024-09-11 19:31:43,157 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 438 transitions. Word has length 289 [2024-09-11 19:31:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:43,157 INFO L474 AbstractCegarLoop]: Abstraction has 378 states and 438 transitions. [2024-09-11 19:31:43,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:43,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 438 transitions. [2024-09-11 19:31:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-09-11 19:31:43,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:43,160 INFO L216 NwaCegarLoop]: trace histogram [136, 86, 50, 50, 40, 10, 1, 1, 1, 1, 1] [2024-09-11 19:31:43,174 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-11 19:31:43,364 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 [2024-09-11 19:31:43,365 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:43,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2030106703, now seen corresponding path program 8 times [2024-09-11 19:31:43,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:43,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695643336] [2024-09-11 19:31:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:48,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695643336] [2024-09-11 19:31:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695643336] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600982409] [2024-09-11 19:31:48,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:31:48,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:48,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:48,532 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:31:48,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:31:48,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:48,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-09-11 19:31:48,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:48,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:31:54,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600982409] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:54,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:54,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 176 [2024-09-11 19:31:54,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726653303] [2024-09-11 19:31:54,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:54,637 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2024-09-11 19:31:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2024-09-11 19:31:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2024-09-11 19:31:54,647 INFO L87 Difference]: Start difference. First operand 378 states and 438 transitions. Second operand has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:55,212 INFO L93 Difference]: Finished difference Result 759 states and 967 transitions. [2024-09-11 19:31:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2024-09-11 19:31:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-09-11 19:31:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:55,216 INFO L225 Difference]: With dead ends: 759 [2024-09-11 19:31:55,216 INFO L226 Difference]: Without dead ends: 554 [2024-09-11 19:31:55,218 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2024-09-11 19:31:55,219 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:55,219 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:31:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-09-11 19:31:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2024-09-11 19:31:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.1103074141048825) internal successors, (614), 553 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 614 transitions. [2024-09-11 19:31:55,260 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 614 transitions. Word has length 377 [2024-09-11 19:31:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:55,262 INFO L474 AbstractCegarLoop]: Abstraction has 554 states and 614 transitions. [2024-09-11 19:31:55,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:55,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 614 transitions. [2024-09-11 19:31:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2024-09-11 19:31:55,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:55,272 INFO L216 NwaCegarLoop]: trace histogram [224, 174, 50, 50, 40, 10, 1, 1, 1, 1, 1] [2024-09-11 19:31:55,285 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 19:31:55,472 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 [2024-09-11 19:31:55,473 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:55,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1994049705, now seen corresponding path program 9 times [2024-09-11 19:31:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023503059] [2024-09-11 19:31:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:32:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 17325 proven. 30450 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2024-09-11 19:32:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:32:17,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023503059] [2024-09-11 19:32:17,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023503059] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:32:17,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748163959] [2024-09-11 19:32:17,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:32:17,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:32:17,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:32:17,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:32:17,388 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:32:17,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-11 19:32:17,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:32:17,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:32:17,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:32:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 5323 proven. 200 refuted. 0 times theorem prover too weak. 47103 trivial. 0 not checked. [2024-09-11 19:32:18,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:32:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 5323 proven. 200 refuted. 0 times theorem prover too weak. 47103 trivial. 0 not checked. [2024-09-11 19:32:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748163959] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:32:19,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:32:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 13, 13] total 199 [2024-09-11 19:32:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608273364] [2024-09-11 19:32:19,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:32:19,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2024-09-11 19:32:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:32:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2024-09-11 19:32:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2024-09-11 19:32:19,659 INFO L87 Difference]: Start difference. First operand 554 states and 614 transitions. Second operand has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:32:21,010 INFO L93 Difference]: Finished difference Result 809 states and 966 transitions. [2024-09-11 19:32:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-09-11 19:32:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2024-09-11 19:32:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:32:21,015 INFO L225 Difference]: With dead ends: 809 [2024-09-11 19:32:21,015 INFO L226 Difference]: Without dead ends: 604 [2024-09-11 19:32:21,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2024-09-11 19:32:21,019 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:32:21,019 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:32:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-09-11 19:32:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-09-11 19:32:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 1.1409618573797677) internal successors, (688), 603 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 688 transitions. [2024-09-11 19:32:21,061 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 688 transitions. Word has length 553 [2024-09-11 19:32:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:32:21,061 INFO L474 AbstractCegarLoop]: Abstraction has 604 states and 688 transitions. [2024-09-11 19:32:21,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:32:21,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 688 transitions. [2024-09-11 19:32:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-09-11 19:32:21,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:32:21,065 INFO L216 NwaCegarLoop]: trace histogram [237, 175, 62, 62, 40, 22, 1, 1, 1, 1, 1] [2024-09-11 19:32:21,079 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 19:32:21,266 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 [2024-09-11 19:32:21,266 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:32:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:32:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 739426702, now seen corresponding path program 10 times [2024-09-11 19:32:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:32:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798737388] [2024-09-11 19:32:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:32:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:32:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:32:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 59951 backedges. 21648 proven. 30800 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-09-11 19:32:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:32:45,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798737388] [2024-09-11 19:32:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798737388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:32:45,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525885271] [2024-09-11 19:32:45,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:32:45,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:32:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:32:45,429 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:32:45,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 19:32:45,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:32:45,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:32:45,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 352 conjuncts are in the unsatisfiable core [2024-09-11 19:32:45,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:32:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 59951 backedges. 21648 proven. 30800 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-09-11 19:32:46,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 59951 backedges. 21648 proven. 30800 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-09-11 19:33:09,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525885271] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:09,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177, 177] total 354 [2024-09-11 19:33:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861586933] [2024-09-11 19:33:09,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:09,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 355 states [2024-09-11 19:33:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 355 interpolants. [2024-09-11 19:33:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62835, Invalid=62835, Unknown=0, NotChecked=0, Total=125670 [2024-09-11 19:33:09,759 INFO L87 Difference]: Start difference. First operand 604 states and 688 transitions. Second operand has 355 states, 355 states have (on average 2.0225352112676056) internal successors, (718), 354 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:12,207 INFO L93 Difference]: Finished difference Result 1211 states and 1556 transitions. [2024-09-11 19:33:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 354 states. [2024-09-11 19:33:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 355 states, 355 states have (on average 2.0225352112676056) internal successors, (718), 354 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 603 [2024-09-11 19:33:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:12,212 INFO L225 Difference]: With dead ends: 1211 [2024-09-11 19:33:12,212 INFO L226 Difference]: Without dead ends: 958 [2024-09-11 19:33:12,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=62835, Invalid=62835, Unknown=0, NotChecked=0, Total=125670 [2024-09-11 19:33:12,216 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:12,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:33:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-09-11 19:33:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2024-09-11 19:33:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.0888192267502612) internal successors, (1042), 957 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1042 transitions. [2024-09-11 19:33:12,252 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1042 transitions. Word has length 603 [2024-09-11 19:33:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:12,253 INFO L474 AbstractCegarLoop]: Abstraction has 958 states and 1042 transitions. [2024-09-11 19:33:12,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 355 states, 355 states have (on average 2.0225352112676056) internal successors, (718), 354 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:33:12,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1042 transitions. [2024-09-11 19:33:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2024-09-11 19:33:12,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:12,259 INFO L216 NwaCegarLoop]: trace histogram [414, 352, 62, 62, 40, 22, 1, 1, 1, 1, 1] [2024-09-11 19:33:12,274 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-11 19:33:12,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:33:12,459 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1006739263, now seen corresponding path program 11 times [2024-09-11 19:33:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299611971] [2024-09-11 19:33:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 175178 backedges. 43419 proven. 124256 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-09-11 19:35:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299611971] [2024-09-11 19:35:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299611971] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69450783] [2024-09-11 19:35:15,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:15,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:15,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:15,160 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 19:35:17,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 372 check-sat command(s) [2024-09-11 19:35:17,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:17,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 2275 conjuncts, 334 conjuncts are in the unsatisfiable core [2024-09-11 19:35:17,821 INFO L285 TraceCheckSpWp]: Computing forward predicates...