./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:08:16,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:08:16,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:08:16,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:08:16,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:08:16,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:08:16,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:08:16,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:08:16,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:08:16,767 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:08:16,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:08:16,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:08:16,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:08:16,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:08:16,784 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:08:16,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:08:16,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:08:16,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:08:16,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:08:16,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:08:16,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:08:16,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:08:16,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:08:16,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:08:16,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:08:16,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:08:16,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:08:16,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:08:16,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:08:16,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:08:16,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:08:16,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:08:16,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:08:16,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:08:16,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:08:16,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:08:16,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:08:16,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:08:16,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:08:16,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:08:16,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:08:16,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:08:16,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:08:17,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:08:17,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:08:17,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:08:17,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:08:17,054 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:08:17,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-25 00:08:18,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:08:18,922 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:08:18,922 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-25 00:08:18,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/825870fe1/b7153b797a234514bf206db0253caeff/FLAG54a100533 [2024-09-25 00:08:18,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/825870fe1/b7153b797a234514bf206db0253caeff [2024-09-25 00:08:18,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:08:18,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:08:18,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:08:18,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:08:18,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:08:18,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:18" (1/1) ... [2024-09-25 00:08:18,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5523ad4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:18, skipping insertion in model container [2024-09-25 00:08:18,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:18" (1/1) ... [2024-09-25 00:08:18,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:08:19,138 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-25 00:08:19,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:08:19,152 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:08:19,166 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-25 00:08:19,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:08:19,182 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:08:19,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19 WrapperNode [2024-09-25 00:08:19,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:08:19,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:08:19,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:08:19,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:08:19,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,203 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:08:19,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:08:19,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:08:19,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:08:19,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:08:19,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,227 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]. [2024-09-25 00:08:19,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:08:19,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:08:19,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:08:19,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:08:19,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (1/1) ... [2024-09-25 00:08:19,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:08:19,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:19,284 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) [2024-09-25 00:08:19,291 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 [2024-09-25 00:08:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:08:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:08:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:08:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:08:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-25 00:08:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-25 00:08:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-25 00:08:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-25 00:08:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:08:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:08:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:08:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:08:19,393 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:08:19,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:08:19,545 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-25 00:08:19,546 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:08:19,566 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:08:19,566 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:08:19,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:19 BoogieIcfgContainer [2024-09-25 00:08:19,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:08:19,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:08:19,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:08:19,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:08:19,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:08:18" (1/3) ... [2024-09-25 00:08:19,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f08b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:19, skipping insertion in model container [2024-09-25 00:08:19,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:19" (2/3) ... [2024-09-25 00:08:19,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f08b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:19, skipping insertion in model container [2024-09-25 00:08:19,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:19" (3/3) ... [2024-09-25 00:08:19,575 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-09-25 00:08:19,606 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:08:19,606 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:08:19,652 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:08:19,658 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;@3cdcda8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:08:19,658 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:08:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 00:08:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 00:08:19,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:19,668 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:19,669 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:19,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-25 00:08:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91608464] [2024-09-25 00:08:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:19,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:19,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:08:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91608464] [2024-09-25 00:08:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91608464] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:08:20,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:08:20,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:08:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290393925] [2024-09-25 00:08:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:08:20,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:08:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:20,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:08:20,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:08:20,056 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:08:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:20,170 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-25 00:08:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:08:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-25 00:08:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:20,181 INFO L225 Difference]: With dead ends: 44 [2024-09-25 00:08:20,181 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 00:08:20,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:08:20,188 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:20,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:08:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 00:08:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 00:08:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:08:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-25 00:08:20,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-25 00:08:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:20,244 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-25 00:08:20,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:08:20,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-25 00:08:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-25 00:08:20,249 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:20,249 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:20,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:08:20,250 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:20,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-25 00:08:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:20,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560691771] [2024-09-25 00:08:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:08:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560691771] [2024-09-25 00:08:20,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560691771] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:08:20,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:08:20,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:08:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531699255] [2024-09-25 00:08:20,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:08:20,405 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:08:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:08:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:08:20,409 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:08:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:20,490 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-25 00:08:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:08:20,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-25 00:08:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:20,493 INFO L225 Difference]: With dead ends: 36 [2024-09-25 00:08:20,493 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 00:08:20,494 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:08:20,496 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:20,497 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:08:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 00:08:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 00:08:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:08:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-25 00:08:20,513 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-25 00:08:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:20,514 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-25 00:08:20,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:08:20,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-25 00:08:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-25 00:08:20,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:20,517 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:20,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 00:08:20,517 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:20,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-25 00:08:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392231773] [2024-09-25 00:08:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-25 00:08:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:20,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392231773] [2024-09-25 00:08:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392231773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540691733] [2024-09-25 00:08:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:20,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:20,763 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) [2024-09-25 00:08:20,772 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:08:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:20,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:08:20,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:21,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540691733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:21,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-25 00:08:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649294172] [2024-09-25 00:08:21,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:21,187 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 00:08:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 00:08:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:08:21,188 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 00:08:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:21,309 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-25 00:08:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:08:21,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-25 00:08:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:21,311 INFO L225 Difference]: With dead ends: 58 [2024-09-25 00:08:21,311 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 00:08:21,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:08:21,313 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:21,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:08:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 00:08:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-25 00:08:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 00:08:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-25 00:08:21,321 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-25 00:08:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:21,321 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-25 00:08:21,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 00:08:21,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-25 00:08:21,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:08:21,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:21,322 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:21,339 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 00:08:21,526 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 [2024-09-25 00:08:21,527 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:21,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-25 00:08:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:21,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771890133] [2024-09-25 00:08:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:21,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:21,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771890133] [2024-09-25 00:08:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771890133] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401171434] [2024-09-25 00:08:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:21,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:21,637 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) [2024-09-25 00:08:21,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:08:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:21,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:08:21,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:21,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:08:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401171434] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:21,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-25 00:08:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258094229] [2024-09-25 00:08:21,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:21,886 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 00:08:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 00:08:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:08:21,888 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 00:08:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:22,074 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-25 00:08:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:08:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-25 00:08:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:22,078 INFO L225 Difference]: With dead ends: 56 [2024-09-25 00:08:22,078 INFO L226 Difference]: Without dead ends: 52 [2024-09-25 00:08:22,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:08:22,079 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:22,080 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 182 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-25 00:08:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-25 00:08:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 00:08:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-25 00:08:22,092 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-25 00:08:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:22,093 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-25 00:08:22,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 00:08:22,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-25 00:08:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 00:08:22,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:22,095 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:22,116 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:08:22,299 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 [2024-09-25 00:08:22,300 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:22,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-25 00:08:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102066341] [2024-09-25 00:08:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-25 00:08:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 00:08:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:08:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102066341] [2024-09-25 00:08:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102066341] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664303785] [2024-09-25 00:08:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:22,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:22,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:22,405 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) [2024-09-25 00:08:22,406 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:08:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:22,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 00:08:22,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-25 00:08:22,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:08:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664303785] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:22,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-25 00:08:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979875187] [2024-09-25 00:08:22,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:22,895 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:08:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:08:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:08:22,896 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 00:08:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:23,139 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-25 00:08:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:08:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) Word has length 39 [2024-09-25 00:08:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:23,143 INFO L225 Difference]: With dead ends: 112 [2024-09-25 00:08:23,144 INFO L226 Difference]: Without dead ends: 68 [2024-09-25 00:08:23,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-25 00:08:23,148 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:23,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-25 00:08:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-25 00:08:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-09-25 00:08:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-25 00:08:23,171 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-25 00:08:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:23,171 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-25 00:08:23,172 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 00:08:23,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-25 00:08:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-25 00:08:23,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:23,175 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:23,193 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 00:08:23,376 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 [2024-09-25 00:08:23,377 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:23,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-25 00:08:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065884377] [2024-09-25 00:08:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-25 00:08:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065884377] [2024-09-25 00:08:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065884377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348815183] [2024-09-25 00:08:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:23,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:23,552 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) [2024-09-25 00:08:23,553 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:08:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:23,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 00:08:23,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:08:23,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:08:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348815183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:23,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-25 00:08:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974107919] [2024-09-25 00:08:23,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:23,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 00:08:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 00:08:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-25 00:08:23,972 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 00:08:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:24,305 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-25 00:08:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 00:08:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 40 [2024-09-25 00:08:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:24,309 INFO L225 Difference]: With dead ends: 182 [2024-09-25 00:08:24,309 INFO L226 Difference]: Without dead ends: 122 [2024-09-25 00:08:24,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:08:24,311 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:24,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-25 00:08:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-25 00:08:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (64), 26 states have call predecessors, (64), 22 states have call successors, (64) [2024-09-25 00:08:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-25 00:08:24,365 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-25 00:08:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:24,366 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-25 00:08:24,366 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 00:08:24,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-25 00:08:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 00:08:24,370 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:24,370 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:24,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:08:24,570 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 [2024-09-25 00:08:24,571 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-25 00:08:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258907921] [2024-09-25 00:08:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:08:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-25 00:08:24,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258907921] [2024-09-25 00:08:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258907921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484414863] [2024-09-25 00:08:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:24,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:24,755 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) [2024-09-25 00:08:24,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:08:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:24,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:08:24,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-25 00:08:24,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:08:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484414863] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:25,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-25 00:08:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683288186] [2024-09-25 00:08:25,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:25,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 00:08:25,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 00:08:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:08:25,391 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-25 00:08:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:25,704 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-25 00:08:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:08:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) Word has length 54 [2024-09-25 00:08:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:25,708 INFO L225 Difference]: With dead ends: 252 [2024-09-25 00:08:25,708 INFO L226 Difference]: Without dead ends: 155 [2024-09-25 00:08:25,710 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:08:25,710 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:25,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 256 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-25 00:08:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-25 00:08:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (67), 28 states have call predecessors, (67), 25 states have call successors, (67) [2024-09-25 00:08:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-25 00:08:25,735 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-25 00:08:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:25,736 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-25 00:08:25,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-25 00:08:25,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-25 00:08:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-25 00:08:25,742 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:25,742 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:25,759 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 00:08:25,942 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 [2024-09-25 00:08:25,944 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:25,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-25 00:08:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648498596] [2024-09-25 00:08:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 00:08:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 00:08:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648498596] [2024-09-25 00:08:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648498596] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630879819] [2024-09-25 00:08:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:26,281 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) [2024-09-25 00:08:26,285 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:08:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:26,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:08:26,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-25 00:08:26,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-25 00:08:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630879819] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:27,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:27,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-09-25 00:08:27,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364566203] [2024-09-25 00:08:27,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:27,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 00:08:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 00:08:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-25 00:08:27,287 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-25 00:08:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:27,716 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-25 00:08:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 00:08:27,716 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 110 [2024-09-25 00:08:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:27,718 INFO L225 Difference]: With dead ends: 256 [2024-09-25 00:08:27,718 INFO L226 Difference]: Without dead ends: 108 [2024-09-25 00:08:27,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:08:27,721 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:27,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 272 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:08:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-25 00:08:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-25 00:08:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 60 states have internal predecessors, (70), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (39), 20 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 00:08:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-25 00:08:27,739 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-25 00:08:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:27,740 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-25 00:08:27,740 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-25 00:08:27,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-25 00:08:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-25 00:08:27,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:27,742 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:27,775 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:08:27,946 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 [2024-09-25 00:08:27,947 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:27,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-25 00:08:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614221404] [2024-09-25 00:08:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 00:08:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 00:08:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-25 00:08:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614221404] [2024-09-25 00:08:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614221404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367266748] [2024-09-25 00:08:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:28,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:28,445 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) [2024-09-25 00:08:28,446 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:08:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:28,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:08:28,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-25 00:08:28,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-09-25 00:08:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367266748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:29,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2024-09-25 00:08:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119211285] [2024-09-25 00:08:29,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:29,172 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 00:08:29,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 00:08:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-25 00:08:29,174 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-25 00:08:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:29,553 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2024-09-25 00:08:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 00:08:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) Word has length 123 [2024-09-25 00:08:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:29,555 INFO L225 Difference]: With dead ends: 182 [2024-09-25 00:08:29,555 INFO L226 Difference]: Without dead ends: 102 [2024-09-25 00:08:29,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:08:29,557 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:29,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:08:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-25 00:08:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-09-25 00:08:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 18 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (40), 21 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-25 00:08:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2024-09-25 00:08:29,571 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 123 [2024-09-25 00:08:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:29,571 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2024-09-25 00:08:29,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-25 00:08:29,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2024-09-25 00:08:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-25 00:08:29,574 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:29,574 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:29,593 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:08:29,774 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 [2024-09-25 00:08:29,775 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:29,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -210930479, now seen corresponding path program 1 times [2024-09-25 00:08:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380188861] [2024-09-25 00:08:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:29,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:29,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 00:08:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 146 proven. 332 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-25 00:08:30,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380188861] [2024-09-25 00:08:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380188861] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691086074] [2024-09-25 00:08:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:30,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:30,844 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) [2024-09-25 00:08:30,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:08:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:30,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:08:30,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 199 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-09-25 00:08:31,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 213 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-09-25 00:08:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691086074] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:32,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2024-09-25 00:08:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061389669] [2024-09-25 00:08:32,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:32,389 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 00:08:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 00:08:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:08:32,390 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 00:08:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:33,063 INFO L93 Difference]: Finished difference Result 244 states and 433 transitions. [2024-09-25 00:08:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-25 00:08:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) Word has length 204 [2024-09-25 00:08:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:33,066 INFO L225 Difference]: With dead ends: 244 [2024-09-25 00:08:33,066 INFO L226 Difference]: Without dead ends: 126 [2024-09-25 00:08:33,068 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 451 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 00:08:33,068 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:33,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 512 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:08:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-25 00:08:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-09-25 00:08:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (37), 21 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 00:08:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-25 00:08:33,087 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 204 [2024-09-25 00:08:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:33,087 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-25 00:08:33,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 00:08:33,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-25 00:08:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-25 00:08:33,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:33,090 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:33,109 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 00:08:33,294 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 [2024-09-25 00:08:33,295 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -134939570, now seen corresponding path program 2 times [2024-09-25 00:08:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49762027] [2024-09-25 00:08:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 00:08:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 00:08:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2024-09-25 00:08:33,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:33,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49762027] [2024-09-25 00:08:33,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49762027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:33,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351573837] [2024-09-25 00:08:33,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:08:33,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:33,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:33,944 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) [2024-09-25 00:08:33,945 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:08:34,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:08:34,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:34,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:08:34,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-09-25 00:08:34,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-09-25 00:08:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351573837] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:34,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2024-09-25 00:08:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214706374] [2024-09-25 00:08:34,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:34,937 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 00:08:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 00:08:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:08:34,964 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-25 00:08:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:35,339 INFO L93 Difference]: Finished difference Result 222 states and 300 transitions. [2024-09-25 00:08:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:08:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 231 [2024-09-25 00:08:35,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:35,342 INFO L225 Difference]: With dead ends: 222 [2024-09-25 00:08:35,342 INFO L226 Difference]: Without dead ends: 129 [2024-09-25 00:08:35,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 517 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:08:35,344 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:35,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 340 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-25 00:08:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 106. [2024-09-25 00:08:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (34), 21 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-25 00:08:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-09-25 00:08:35,366 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 231 [2024-09-25 00:08:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:35,366 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-09-25 00:08:35,367 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-25 00:08:35,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-09-25 00:08:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-25 00:08:35,370 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:35,370 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:35,388 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:08:35,570 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 [2024-09-25 00:08:35,571 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:35,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2126407970, now seen corresponding path program 3 times [2024-09-25 00:08:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755650549] [2024-09-25 00:08:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 00:08:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-25 00:08:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755650549] [2024-09-25 00:08:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755650549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385086514] [2024-09-25 00:08:36,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:08:36,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:36,369 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) [2024-09-25 00:08:36,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:08:36,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-25 00:08:36,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:36,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:08:36,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 58 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-09-25 00:08:36,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 66 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2024-09-25 00:08:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385086514] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:37,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:37,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 31 [2024-09-25 00:08:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302575074] [2024-09-25 00:08:37,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:37,570 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 00:08:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 00:08:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:08:37,572 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 00:08:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:38,210 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2024-09-25 00:08:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-25 00:08:38,211 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) Word has length 218 [2024-09-25 00:08:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:38,213 INFO L225 Difference]: With dead ends: 249 [2024-09-25 00:08:38,213 INFO L226 Difference]: Without dead ends: 149 [2024-09-25 00:08:38,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 00:08:38,215 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:38,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 379 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:08:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-25 00:08:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2024-09-25 00:08:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (46), 23 states have call predecessors, (46), 23 states have call successors, (46) [2024-09-25 00:08:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-09-25 00:08:38,233 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 218 [2024-09-25 00:08:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:38,233 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-09-25 00:08:38,233 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 00:08:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-09-25 00:08:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-25 00:08:38,235 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:38,235 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:38,252 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-25 00:08:38,435 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 [2024-09-25 00:08:38,436 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:38,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2101186279, now seen corresponding path program 4 times [2024-09-25 00:08:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680035224] [2024-09-25 00:08:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 00:08:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-25 00:08:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680035224] [2024-09-25 00:08:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680035224] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659238202] [2024-09-25 00:08:38,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:08:38,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:38,869 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) [2024-09-25 00:08:38,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:08:38,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:08:38,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:38,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:08:38,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-25 00:08:39,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 00:08:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659238202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:39,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 24 [2024-09-25 00:08:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312597987] [2024-09-25 00:08:39,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:39,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 00:08:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 00:08:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:08:39,652 INFO L87 Difference]: Start difference. First operand 130 states and 169 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-25 00:08:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:39,927 INFO L93 Difference]: Finished difference Result 264 states and 347 transitions. [2024-09-25 00:08:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:08:39,928 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) Word has length 150 [2024-09-25 00:08:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:39,930 INFO L225 Difference]: With dead ends: 264 [2024-09-25 00:08:39,930 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 00:08:39,932 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 332 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:08:39,932 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:39,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 00:08:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-25 00:08:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 00:08:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-09-25 00:08:39,948 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 150 [2024-09-25 00:08:39,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:39,948 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-09-25 00:08:39,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-25 00:08:39,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-09-25 00:08:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-25 00:08:39,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:39,951 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:39,968 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 00:08:40,152 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 [2024-09-25 00:08:40,152 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:40,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1073615655, now seen corresponding path program 5 times [2024-09-25 00:08:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212649676] [2024-09-25 00:08:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 00:08:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 00:08:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-09-25 00:08:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212649676] [2024-09-25 00:08:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212649676] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629525906] [2024-09-25 00:08:40,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:08:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:40,749 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) [2024-09-25 00:08:40,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:08:40,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-25 00:08:40,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:40,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:08:40,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-25 00:08:40,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 143 proven. 256 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-25 00:08:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629525906] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:41,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:41,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-09-25 00:08:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415725210] [2024-09-25 00:08:41,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:41,924 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 00:08:41,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:41,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 00:08:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-25 00:08:41,925 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-25 00:08:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:42,189 INFO L93 Difference]: Finished difference Result 255 states and 341 transitions. [2024-09-25 00:08:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:08:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 204 [2024-09-25 00:08:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:42,191 INFO L225 Difference]: With dead ends: 255 [2024-09-25 00:08:42,192 INFO L226 Difference]: Without dead ends: 135 [2024-09-25 00:08:42,193 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:08:42,193 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:42,194 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-25 00:08:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-09-25 00:08:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2024-09-25 00:08:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2024-09-25 00:08:42,210 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 204 [2024-09-25 00:08:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:42,211 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2024-09-25 00:08:42,211 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-25 00:08:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2024-09-25 00:08:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-25 00:08:42,213 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:42,213 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:42,231 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 00:08:42,414 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 [2024-09-25 00:08:42,414 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:42,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 982134510, now seen corresponding path program 6 times [2024-09-25 00:08:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:42,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374540749] [2024-09-25 00:08:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:43,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 00:08:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 00:08:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:44,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374540749] [2024-09-25 00:08:44,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374540749] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:44,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749893480] [2024-09-25 00:08:44,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:08:44,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:44,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:44,555 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) [2024-09-25 00:08:44,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:08:44,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-25 00:08:44,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:44,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-25 00:08:44,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 00:08:45,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 00:08:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749893480] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:45,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-25 00:08:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600173702] [2024-09-25 00:08:45,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:45,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:08:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:08:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:08:45,742 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-25 00:08:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:46,035 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2024-09-25 00:08:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-25 00:08:46,036 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 177 [2024-09-25 00:08:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:46,037 INFO L225 Difference]: With dead ends: 140 [2024-09-25 00:08:46,037 INFO L226 Difference]: Without dead ends: 136 [2024-09-25 00:08:46,038 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:08:46,038 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:46,039 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1445 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:08:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-25 00:08:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-25 00:08:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (35), 23 states have call predecessors, (35), 23 states have call successors, (35) [2024-09-25 00:08:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-09-25 00:08:46,057 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 177 [2024-09-25 00:08:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:46,058 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-09-25 00:08:46,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-25 00:08:46,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-09-25 00:08:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-25 00:08:46,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:46,059 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:46,077 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-25 00:08:46,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 00:08:46,261 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash -790133168, now seen corresponding path program 7 times [2024-09-25 00:08:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249895313] [2024-09-25 00:08:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 00:08:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 00:08:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:46,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 00:08:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:08:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 00:08:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:08:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 221 proven. 250 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-09-25 00:08:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249895313] [2024-09-25 00:08:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249895313] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425218044] [2024-09-25 00:08:47,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:08:47,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:47,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:08:47,055 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 00:08:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:47,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 00:08:47,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-09-25 00:08:47,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 370 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-09-25 00:08:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425218044] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:49,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2024-09-25 00:08:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65199314] [2024-09-25 00:08:49,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:49,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 00:08:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 00:08:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:08:49,119 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-25 00:08:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:49,535 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2024-09-25 00:08:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 00:08:49,536 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) Word has length 218 [2024-09-25 00:08:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:49,538 INFO L225 Difference]: With dead ends: 251 [2024-09-25 00:08:49,538 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:08:49,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 479 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:08:49,540 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:49,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 422 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:08:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:08:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:08:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 00:08:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:08:49,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-09-25 00:08:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:49,542 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:08:49,543 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-25 00:08:49,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:08:49,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:08:49,546 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:08:49,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-25 00:08:49,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 00:08:49,754 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:49,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:08:58,041 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:08:58,075 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-25 00:08:58,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:08:58 BoogieIcfgContainer [2024-09-25 00:08:58,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:08:58,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:08:58,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:08:58,078 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:08:58,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:19" (3/4) ... [2024-09-25 00:08:58,081 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:08:58,135 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:08:58,135 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:08:58,136 INFO L158 Benchmark]: Toolchain (without parser) took 39186.69ms. Allocated memory was 148.9MB in the beginning and 914.4MB in the end (delta: 765.5MB). Free memory was 78.3MB in the beginning and 389.5MB in the end (delta: -311.2MB). Peak memory consumption was 455.3MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,136 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:08:58,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.25ms. Allocated memory is still 148.9MB. Free memory was 78.0MB in the beginning and 67.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.57ms. Allocated memory is still 148.9MB. Free memory was 66.8MB in the beginning and 65.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,137 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 148.9MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,137 INFO L158 Benchmark]: RCFGBuilder took 331.12ms. Allocated memory was 148.9MB in the beginning and 243.3MB in the end (delta: 94.4MB). Free memory was 64.0MB in the beginning and 210.7MB in the end (delta: -146.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,137 INFO L158 Benchmark]: TraceAbstraction took 38508.27ms. Allocated memory was 243.3MB in the beginning and 914.4MB in the end (delta: 671.1MB). Free memory was 210.1MB in the beginning and 391.6MB in the end (delta: -181.6MB). Peak memory consumption was 551.6MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,137 INFO L158 Benchmark]: Witness Printer took 57.30ms. Allocated memory is still 914.4MB. Free memory was 391.6MB in the beginning and 389.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:08:58,139 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.25ms. Allocated memory is still 148.9MB. Free memory was 78.0MB in the beginning and 67.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.57ms. Allocated memory is still 148.9MB. Free memory was 66.8MB in the beginning and 65.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 148.9MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.12ms. Allocated memory was 148.9MB in the beginning and 243.3MB in the end (delta: 94.4MB). Free memory was 64.0MB in the beginning and 210.7MB in the end (delta: -146.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 38508.27ms. Allocated memory was 243.3MB in the beginning and 914.4MB in the end (delta: 671.1MB). Free memory was 210.1MB in the beginning and 391.6MB in the end (delta: -181.6MB). Peak memory consumption was 551.6MB. Max. memory is 16.1GB. * Witness Printer took 57.30ms. Allocated memory is still 914.4MB. Free memory was 391.6MB in the beginning and 389.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.1s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 697 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 628 mSDsluCounter, 5616 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5089 mSDsCounter, 572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6319 IncrementalHoareTripleChecker+Invalid, 6891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 572 mSolverCounterUnsat, 527 mSDtfsCounter, 6319 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4525 GetRequests, 4050 SyntacticMatches, 62 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=14, InterpolantAutomatonStates: 315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 176 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 3669 NumberOfCodeBlocks, 3436 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5446 ConstructedInterpolants, 0 QuantifiedInterpolants, 9330 SizeOfPredicates, 44 NumberOfNonLiveVariables, 3742 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 44 InterpolantComputations, 2 PerfectInterpolantSequences, 19216/24261 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((((((((2 == \result) && (3 == n)) || ((\result == 1) && (n == 1))) || (5 < n)) || ((3 == \result) && (n == 4))) || (n < 1)) || ((5 == \result) && (5 == n))) || ((\result == 1) && (2 == n))) && (((\result == 0) || (n == 1)) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((\result == 0) || (0 < n)) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:08:58,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE