./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.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/recursive/Addition03-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --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 20:24:16,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:24:16,764 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:24:16,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:24:16,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:24:16,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:24:16,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:24:16,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:24:16,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:24:16,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:24:16,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:24:16,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:24:16,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:24:16,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:24:16,808 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:24:16,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:24:16,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:24:16,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:24:16,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:24:16,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:24:16,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:24:16,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:24:16,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:24:16,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:24:16,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:24:16,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:24:16,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:24:16,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:24:16,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:24:16,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:24:16,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:24:16,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:24:16,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:16,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:24:16,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:24:16,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:24:16,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:24:16,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:24:16,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:24:16,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:24:16,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:24:16,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:24:16,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:24:17,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:24:17,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:24:17,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:24:17,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:24:17,135 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:24:17,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-11 20:24:18,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:24:18,819 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:24:18,821 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-11 20:24:18,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/990cc19eb/78fc268b5a0241d0a7ed2cbd55f0a613/FLAG857fbda73 [2024-09-11 20:24:18,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/990cc19eb/78fc268b5a0241d0a7ed2cbd55f0a613 [2024-09-11 20:24:18,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:24:18,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:24:18,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:18,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:24:18,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:24:18,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:18" (1/1) ... [2024-09-11 20:24:18,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78192147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:18, skipping insertion in model container [2024-09-11 20:24:18,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:18" (1/1) ... [2024-09-11 20:24:18,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:24:19,060 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-11 20:24:19,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:19,084 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:24:19,102 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-11 20:24:19,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:19,121 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:24:19,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19 WrapperNode [2024-09-11 20:24:19,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:19,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:19,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:24:19,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:24:19,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,158 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-09-11 20:24:19,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:19,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:24:19,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:24:19,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:24:19,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,192 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 20:24:19,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:24:19,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:24:19,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:24:19,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:24:19,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (1/1) ... [2024-09-11 20:24:19,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:19,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:19,245 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 20:24:19,248 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 20:24:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:24:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:24:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:24:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:24:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-11 20:24:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-11 20:24:19,345 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:24:19,346 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:24:19,476 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-11 20:24:19,477 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:24:19,503 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:24:19,503 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:24:19,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:19 BoogieIcfgContainer [2024-09-11 20:24:19,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:24:19,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:24:19,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:24:19,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:24:19,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:24:18" (1/3) ... [2024-09-11 20:24:19,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38db8c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:19, skipping insertion in model container [2024-09-11 20:24:19,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:19" (2/3) ... [2024-09-11 20:24:19,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38db8c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:19, skipping insertion in model container [2024-09-11 20:24:19,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:19" (3/3) ... [2024-09-11 20:24:19,517 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-11 20:24:19,535 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:24:19,537 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:24:19,602 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:24:19,609 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;@37738ad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:24:19,610 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:24:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 20:24:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 20:24:19,629 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:19,630 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:19,631 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1536395142, now seen corresponding path program 1 times [2024-09-11 20:24:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:19,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607220821] [2024-09-11 20:24:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:19,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:19,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,029 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 20:24:20,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607220821] [2024-09-11 20:24:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607220821] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:20,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639457479] [2024-09-11 20:24:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:20,038 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:20,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:20,098 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:20,260 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2024-09-11 20:24:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 20:24:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-11 20:24:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:20,273 INFO L225 Difference]: With dead ends: 28 [2024-09-11 20:24:20,273 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 20:24:20,276 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:20,282 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:20,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 20:24:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-09-11 20:24:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2024-09-11 20:24:20,328 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2024-09-11 20:24:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:20,328 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-09-11 20:24:20,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:20,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2024-09-11 20:24:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 20:24:20,331 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:20,331 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:20,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:24:20,332 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:20,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1226103713, now seen corresponding path program 1 times [2024-09-11 20:24:20,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:20,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012620567] [2024-09-11 20:24:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:20,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,425 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 20:24:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012620567] [2024-09-11 20:24:20,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012620567] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:20,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:20,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 20:24:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910773662] [2024-09-11 20:24:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:20,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 20:24:20,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 20:24:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 20:24:20,434 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:20,467 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2024-09-11 20:24:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 20:24:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-11 20:24:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:20,469 INFO L225 Difference]: With dead ends: 28 [2024-09-11 20:24:20,469 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 20:24:20,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 20:24:20,471 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:20,472 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:24:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 20:24:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-09-11 20:24:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-09-11 20:24:20,482 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-09-11 20:24:20,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:20,486 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-09-11 20:24:20,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:20,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-09-11 20:24:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 20:24:20,489 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:20,489 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:20,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 20:24:20,489 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1532203166, now seen corresponding path program 1 times [2024-09-11 20:24:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:20,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159051169] [2024-09-11 20:24:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159051169] [2024-09-11 20:24:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159051169] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552929076] [2024-09-11 20:24:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:20,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:20,772 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 20:24:20,774 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 20:24:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 20:24:20,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 20:24:20,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552929076] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:21,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-11 20:24:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413367675] [2024-09-11 20:24:21,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:21,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 20:24:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 20:24:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-11 20:24:21,147 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-11 20:24:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:21,326 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2024-09-11 20:24:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 20:24:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 16 [2024-09-11 20:24:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:21,330 INFO L225 Difference]: With dead ends: 53 [2024-09-11 20:24:21,330 INFO L226 Difference]: Without dead ends: 33 [2024-09-11 20:24:21,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-11 20:24:21,334 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:21,334 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 53 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-11 20:24:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-09-11 20:24:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-11 20:24:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-09-11 20:24:21,351 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 16 [2024-09-11 20:24:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:21,352 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-09-11 20:24:21,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-11 20:24:21,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-09-11 20:24:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 20:24:21,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:21,354 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:21,372 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:21,558 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:21,559 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:21,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 889673888, now seen corresponding path program 2 times [2024-09-11 20:24:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:21,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215109226] [2024-09-11 20:24:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 20:24:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215109226] [2024-09-11 20:24:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215109226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002488428] [2024-09-11 20:24:21,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:21,932 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 20:24:21,935 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 20:24:21,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:21,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:21,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 20:24:21,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 20:24:22,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 20:24:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002488428] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:22,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-11 20:24:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893170829] [2024-09-11 20:24:22,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:22,751 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 20:24:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 20:24:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-11 20:24:22,753 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-11 20:24:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:22,935 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-09-11 20:24:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 20:24:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 30 [2024-09-11 20:24:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:22,937 INFO L225 Difference]: With dead ends: 45 [2024-09-11 20:24:22,937 INFO L226 Difference]: Without dead ends: 39 [2024-09-11 20:24:22,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-09-11 20:24:22,938 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:22,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 52 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-11 20:24:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-09-11 20:24:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-11 20:24:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-09-11 20:24:22,952 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 30 [2024-09-11 20:24:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:22,952 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-09-11 20:24:22,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-11 20:24:22,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-09-11 20:24:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 20:24:22,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:22,955 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:22,972 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:23,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:23,159 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:23,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1347158946, now seen corresponding path program 3 times [2024-09-11 20:24:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778193184] [2024-09-11 20:24:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 20:24:23,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778193184] [2024-09-11 20:24:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778193184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940672889] [2024-09-11 20:24:23,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:24:23,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:23,609 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 20:24:23,611 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 20:24:23,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 20:24:23,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:23,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 20:24:23,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-11 20:24:23,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 20:24:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940672889] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:25,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-11 20:24:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957285673] [2024-09-11 20:24:25,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:25,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 20:24:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 20:24:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-11 20:24:25,011 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-11 20:24:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:25,196 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-09-11 20:24:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 20:24:25,196 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 44 [2024-09-11 20:24:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:25,199 INFO L225 Difference]: With dead ends: 51 [2024-09-11 20:24:25,199 INFO L226 Difference]: Without dead ends: 45 [2024-09-11 20:24:25,200 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2024-09-11 20:24:25,202 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:25,203 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 59 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-11 20:24:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-11 20:24:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-11 20:24:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-09-11 20:24:25,220 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 44 [2024-09-11 20:24:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:25,222 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-09-11 20:24:25,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-11 20:24:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-09-11 20:24:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-11 20:24:25,224 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:25,224 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:25,241 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 20:24:25,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:25,425 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:25,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash -659328604, now seen corresponding path program 4 times [2024-09-11 20:24:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:25,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453964467] [2024-09-11 20:24:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 20:24:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453964467] [2024-09-11 20:24:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453964467] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101586814] [2024-09-11 20:24:26,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:24:26,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:26,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:26,005 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 20:24:26,007 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 20:24:26,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:24:26,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:26,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 20:24:26,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-11 20:24:26,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 20:24:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101586814] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:28,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-11 20:24:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187531956] [2024-09-11 20:24:28,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:28,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 20:24:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 20:24:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-11 20:24:28,534 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-09-11 20:24:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:28,761 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-09-11 20:24:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 20:24:28,761 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 58 [2024-09-11 20:24:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:28,763 INFO L225 Difference]: With dead ends: 57 [2024-09-11 20:24:28,763 INFO L226 Difference]: Without dead ends: 51 [2024-09-11 20:24:28,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 20:24:28,764 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 104 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:28,765 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 82 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-11 20:24:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-09-11 20:24:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (14), 11 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-11 20:24:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-09-11 20:24:28,775 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 58 [2024-09-11 20:24:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:28,775 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-09-11 20:24:28,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-09-11 20:24:28,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-09-11 20:24:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-11 20:24:28,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:28,778 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:28,795 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 20:24:28,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:28,983 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:28,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1137737050, now seen corresponding path program 5 times [2024-09-11 20:24:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075582084] [2024-09-11 20:24:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-11 20:24:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075582084] [2024-09-11 20:24:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075582084] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181578210] [2024-09-11 20:24:29,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:24:29,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:29,705 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 20:24:29,707 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 20:24:29,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-11 20:24:29,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:29,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 20:24:29,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-11 20:24:29,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 20:24:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181578210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:33,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-11 20:24:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662687391] [2024-09-11 20:24:33,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:33,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 20:24:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 20:24:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-11 20:24:33,351 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 29 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2024-09-11 20:24:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:33,576 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2024-09-11 20:24:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 20:24:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 29 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) Word has length 72 [2024-09-11 20:24:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:33,579 INFO L225 Difference]: With dead ends: 63 [2024-09-11 20:24:33,579 INFO L226 Difference]: Without dead ends: 57 [2024-09-11 20:24:33,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 139 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=507, Invalid=1053, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 20:24:33,582 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:33,582 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 98 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-11 20:24:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-09-11 20:24:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (16), 13 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-11 20:24:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-09-11 20:24:33,601 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 72 [2024-09-11 20:24:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:33,602 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-09-11 20:24:33,602 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 29 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2024-09-11 20:24:33,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-09-11 20:24:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-11 20:24:33,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:33,607 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:33,624 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:33,807 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 20:24:33,807 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:33,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash 85071528, now seen corresponding path program 6 times [2024-09-11 20:24:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897344017] [2024-09-11 20:24:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:33,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-11 20:24:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897344017] [2024-09-11 20:24:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897344017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262282850] [2024-09-11 20:24:34,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:24:34,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:34,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:34,723 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 20:24:34,725 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 20:24:34,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-11 20:24:34,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:34,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 20:24:34,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-11 20:24:35,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 20:24:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262282850] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-11 20:24:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915002729] [2024-09-11 20:24:40,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:40,845 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 20:24:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 20:24:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 20:24:40,847 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 33 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2024-09-11 20:24:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:41,096 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-11 20:24:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 20:24:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 33 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 86 [2024-09-11 20:24:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:41,098 INFO L225 Difference]: With dead ends: 69 [2024-09-11 20:24:41,099 INFO L226 Difference]: Without dead ends: 63 [2024-09-11 20:24:41,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 167 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=675, Invalid=1395, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 20:24:41,100 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 210 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:41,100 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 93 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-11 20:24:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-09-11 20:24:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (18), 15 states have call predecessors, (18), 4 states have call successors, (18) [2024-09-11 20:24:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-09-11 20:24:41,111 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 86 [2024-09-11 20:24:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:41,112 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-09-11 20:24:41,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 33 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2024-09-11 20:24:41,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-09-11 20:24:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-11 20:24:41,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:41,114 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:41,131 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 20:24:41,318 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:41,319 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:41,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 873270698, now seen corresponding path program 7 times [2024-09-11 20:24:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574349706] [2024-09-11 20:24:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:41,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:41,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:41,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:41,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-11 20:24:42,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574349706] [2024-09-11 20:24:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574349706] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927248338] [2024-09-11 20:24:42,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:24:42,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:42,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:42,555 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 20:24:42,557 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 20:24:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:42,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 20:24:42,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-11 20:24:42,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 20:24:52,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927248338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:52,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-11 20:24:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267381871] [2024-09-11 20:24:52,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:52,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-11 20:24:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-11 20:24:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 20:24:52,783 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) [2024-09-11 20:24:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:53,033 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-09-11 20:24:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 20:24:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) Word has length 100 [2024-09-11 20:24:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:53,035 INFO L225 Difference]: With dead ends: 75 [2024-09-11 20:24:53,035 INFO L226 Difference]: Without dead ends: 69 [2024-09-11 20:24:53,036 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 195 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=867, Invalid=1785, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 20:24:53,037 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:53,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 104 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-11 20:24:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-09-11 20:24:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (20), 17 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-11 20:24:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-09-11 20:24:53,048 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 100 [2024-09-11 20:24:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:53,049 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-09-11 20:24:53,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) [2024-09-11 20:24:53,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-09-11 20:24:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-11 20:24:53,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:53,051 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:53,069 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 20:24:53,255 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:53,256 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:53,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1707980884, now seen corresponding path program 8 times [2024-09-11 20:24:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745070523] [2024-09-11 20:24:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:24:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:53,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-11 20:24:54,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745070523] [2024-09-11 20:24:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745070523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653464951] [2024-09-11 20:24:54,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:54,763 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 20:24:54,765 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 20:24:55,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:55,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:55,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 20:24:55,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-11 20:24:55,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 20:25:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653464951] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:09,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:09,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-11 20:25:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629133708] [2024-09-11 20:25:09,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:09,933 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 20:25:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 20:25:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 20:25:09,935 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2024-09-11 20:25:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:10,188 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2024-09-11 20:25:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 20:25:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) Word has length 114 [2024-09-11 20:25:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:10,190 INFO L225 Difference]: With dead ends: 81 [2024-09-11 20:25:10,190 INFO L226 Difference]: Without dead ends: 75 [2024-09-11 20:25:10,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 223 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 20:25:10,192 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 95 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:10,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 115 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:25:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-11 20:25:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-09-11 20:25:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (22), 19 states have call predecessors, (22), 4 states have call successors, (22) [2024-09-11 20:25:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2024-09-11 20:25:10,204 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 114 [2024-09-11 20:25:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:10,204 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2024-09-11 20:25:10,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2024-09-11 20:25:10,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2024-09-11 20:25:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-11 20:25:10,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:10,206 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:10,222 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:10,410 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:10,411 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:10,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1292655442, now seen corresponding path program 9 times [2024-09-11 20:25:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11223494] [2024-09-11 20:25:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:25:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:10,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-11 20:25:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11223494] [2024-09-11 20:25:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11223494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539644245] [2024-09-11 20:25:12,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:12,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:12,277 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 20:25:12,279 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 20:25:12,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-11 20:25:12,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:12,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 20:25:12,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-11 20:25:13,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-11 20:25:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539644245] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:34,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-11 20:25:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281909050] [2024-09-11 20:25:34,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:34,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-11 20:25:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-11 20:25:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 20:25:34,705 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 45 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) [2024-09-11 20:25:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:35,011 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2024-09-11 20:25:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 20:25:35,012 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) Word has length 128 [2024-09-11 20:25:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:35,013 INFO L225 Difference]: With dead ends: 87 [2024-09-11 20:25:35,014 INFO L226 Difference]: Without dead ends: 81 [2024-09-11 20:25:35,015 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 251 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1323, Invalid=2709, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 20:25:35,038 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:35,038 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 128 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:25:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-11 20:25:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-09-11 20:25:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (24), 21 states have call predecessors, (24), 4 states have call successors, (24) [2024-09-11 20:25:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-09-11 20:25:35,054 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 128 [2024-09-11 20:25:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:35,055 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-09-11 20:25:35,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) [2024-09-11 20:25:35,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-09-11 20:25:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-11 20:25:35,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:35,057 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:35,073 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:35,258 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 20:25:35,258 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:35,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2116224176, now seen corresponding path program 10 times [2024-09-11 20:25:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:35,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456758168] [2024-09-11 20:25:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:25:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:36,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-11 20:25:37,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456758168] [2024-09-11 20:25:37,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456758168] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008051547] [2024-09-11 20:25:37,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:25:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:37,581 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 20:25:37,582 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 20:25:38,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:25:38,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:38,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-11 20:25:38,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-11 20:25:38,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-11 20:26:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008051547] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:09,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-11 20:26:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522144105] [2024-09-11 20:26:09,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:09,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 20:26:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 20:26:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 20:26:09,576 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) [2024-09-11 20:26:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:09,977 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2024-09-11 20:26:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 20:26:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) Word has length 142 [2024-09-11 20:26:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:09,979 INFO L225 Difference]: With dead ends: 93 [2024-09-11 20:26:09,980 INFO L226 Difference]: Without dead ends: 87 [2024-09-11 20:26:09,982 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 279 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1587, Invalid=3243, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 20:26:09,983 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 318 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:09,983 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 137 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:26:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-11 20:26:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-09-11 20:26:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (26), 23 states have call predecessors, (26), 4 states have call successors, (26) [2024-09-11 20:26:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2024-09-11 20:26:09,995 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 142 [2024-09-11 20:26:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:09,996 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2024-09-11 20:26:09,996 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) [2024-09-11 20:26:09,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2024-09-11 20:26:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-11 20:26:09,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:09,998 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:10,021 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 20:26:10,199 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 20:26:10,199 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:10,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash -638433358, now seen corresponding path program 11 times [2024-09-11 20:26:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761526265] [2024-09-11 20:26:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:10,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:26:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:10,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:10,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:11,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-11 20:26:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761526265] [2024-09-11 20:26:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761526265] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092900057] [2024-09-11 20:26:12,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:26:12,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:12,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:12,687 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 20:26:12,688 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 20:26:13,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-11 20:26:13,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:13,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-11 20:26:13,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-11 20:26:13,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-11 20:26:56,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092900057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:56,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-11 20:26:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543027174] [2024-09-11 20:26:56,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:56,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 20:26:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 20:26:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 20:26:56,894 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) [2024-09-11 20:26:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:57,305 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2024-09-11 20:26:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 20:26:57,305 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) Word has length 156 [2024-09-11 20:26:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:57,306 INFO L225 Difference]: With dead ends: 99 [2024-09-11 20:26:57,307 INFO L226 Difference]: Without dead ends: 93 [2024-09-11 20:26:57,308 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 307 SyntacticMatches, 21 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1875, Invalid=3825, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 20:26:57,309 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 407 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:57,310 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 140 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:26:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-11 20:26:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-09-11 20:26:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 24 states have return successors, (28), 25 states have call predecessors, (28), 4 states have call successors, (28) [2024-09-11 20:26:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-09-11 20:26:57,320 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 156 [2024-09-11 20:26:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:57,320 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-09-11 20:26:57,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) [2024-09-11 20:26:57,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-09-11 20:26:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-11 20:26:57,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:57,323 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:57,345 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 20:26:57,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:57,523 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:57,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash -588034636, now seen corresponding path program 12 times [2024-09-11 20:26:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404075420] [2024-09-11 20:26:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:57,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:26:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:57,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:58,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-11 20:26:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404075420] [2024-09-11 20:26:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404075420] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302159265] [2024-09-11 20:26:59,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:26:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:59,811 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 20:26:59,812 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 20:27:01,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-11 20:27:01,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:27:01,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 20:27:01,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-11 20:27:01,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-11 20:27:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302159265] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:57,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:57,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-11 20:27:57,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015563644] [2024-09-11 20:27:57,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:57,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-11 20:27:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-11 20:27:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 20:27:57,962 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 57 states, 57 states have (on average 2.3859649122807016) internal successors, (136), 57 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) [2024-09-11 20:27:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:58,340 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-09-11 20:27:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 20:27:58,340 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.3859649122807016) internal successors, (136), 57 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) Word has length 170 [2024-09-11 20:27:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:58,342 INFO L225 Difference]: With dead ends: 105 [2024-09-11 20:27:58,342 INFO L226 Difference]: Without dead ends: 99 [2024-09-11 20:27:58,344 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 335 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2187, Invalid=4455, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 20:27:58,345 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 270 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:58,345 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 159 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:27:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-11 20:27:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-09-11 20:27:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 26 states have return successors, (30), 27 states have call predecessors, (30), 4 states have call successors, (30) [2024-09-11 20:27:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2024-09-11 20:27:58,357 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 170 [2024-09-11 20:27:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:58,358 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2024-09-11 20:27:58,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.3859649122807016) internal successors, (136), 57 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) [2024-09-11 20:27:58,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2024-09-11 20:27:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-09-11 20:27:58,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:58,360 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:58,381 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:58,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 20:27:58,561 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:58,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 806876854, now seen corresponding path program 13 times [2024-09-11 20:27:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:58,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974927733] [2024-09-11 20:27:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:58,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:27:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-11 20:28:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:28:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974927733] [2024-09-11 20:28:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974927733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:28:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108366350] [2024-09-11 20:28:01,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:28:01,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:28:01,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:28:01,404 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 20:28:01,406 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 20:28:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:03,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-11 20:28:03,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:28:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-11 20:28:03,556 INFO L327 TraceCheckSpWp]: Computing backward predicates...