./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 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/loop-invgen/down.i -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 d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 10:22:31,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:22:31,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:22:31,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:22:31,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:22:31,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:22:31,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:22:31,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:22:31,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:22:31,530 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:22:31,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:22:31,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:22:31,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:22:31,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:22:31,532 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:22:31,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:22:31,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:22:31,533 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:22:31,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:22:31,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:22:31,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:22:31,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:22:31,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:22:31,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:22:31,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:22:31,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:22:31,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:22:31,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:22:31,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:22:31,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:22:31,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:22:31,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:22:31,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:22:31,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:22:31,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:22:31,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:22:31,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:22:31,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:22:31,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:22:31,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:22:31,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:22:31,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:22:31,552 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 -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 10:22:31,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:22:31,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:22:31,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:22:31,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:22:31,904 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:22:31,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-25 10:22:33,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:22:33,591 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:22:33,592 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-25 10:22:33,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a0aed6f15/0ef91986da1c4bd183b03320888bad8b/FLAG4df8cbcdd [2024-09-25 10:22:33,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a0aed6f15/0ef91986da1c4bd183b03320888bad8b [2024-09-25 10:22:33,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:22:33,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:22:33,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:22:33,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:22:33,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:22:33,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f99eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33, skipping insertion in model container [2024-09-25 10:22:33,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:22:33,828 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/loop-invgen/down.i[893,906] [2024-09-25 10:22:33,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:22:33,856 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:22:33,867 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/loop-invgen/down.i[893,906] [2024-09-25 10:22:33,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:22:33,888 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:22:33,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33 WrapperNode [2024-09-25 10:22:33,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:22:33,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:22:33,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:22:33,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:22:33,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,914 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:22:33,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:22:33,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:22:33,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:22:33,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:22:33,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,941 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 10:22:33,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:22:33,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:22:33,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:22:33,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:22:33,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (1/1) ... [2024-09-25 10:22:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:22:33,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:33,995 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 10:22:33,999 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 10:22:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:22:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:22:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:22:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:22:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:22:34,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:22:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:22:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:22:34,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:22:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:22:34,153 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:22:34,155 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:22:34,306 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-25 10:22:34,307 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:22:34,331 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:22:34,332 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-25 10:22:34,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:22:34 BoogieIcfgContainer [2024-09-25 10:22:34,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:22:34,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:22:34,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:22:34,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:22:34,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:22:33" (1/3) ... [2024-09-25 10:22:34,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c668996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:22:34, skipping insertion in model container [2024-09-25 10:22:34,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:22:33" (2/3) ... [2024-09-25 10:22:34,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c668996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:22:34, skipping insertion in model container [2024-09-25 10:22:34,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:22:34" (3/3) ... [2024-09-25 10:22:34,343 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-25 10:22:34,360 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:22:34,360 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:22:34,419 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:22:34,426 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;@2dae87bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:22:34,427 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:22:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-25 10:22:34,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:34,439 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:34,439 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:34,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-09-25 10:22:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181085574] [2024-09-25 10:22:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:34,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:34,616 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 10:22:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181085574] [2024-09-25 10:22:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181085574] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:22:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:22:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:22:34,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965942403] [2024-09-25 10:22:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:22:34,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:22:34,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:22:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:22:34,651 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:34,679 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-25 10:22:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:22:34,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-25 10:22:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:34,688 INFO L225 Difference]: With dead ends: 34 [2024-09-25 10:22:34,688 INFO L226 Difference]: Without dead ends: 16 [2024-09-25 10:22:34,691 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:22:34,695 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:34,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-25 10:22:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-25 10:22:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 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 10:22:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-25 10:22:34,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-25 10:22:34,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:34,732 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-25 10:22:34,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:34,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-25 10:22:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-25 10:22:34,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:34,734 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:34,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:22:34,735 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:34,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:34,739 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-09-25 10:22:34,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:34,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611087336] [2024-09-25 10:22:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:34,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:34,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:34,865 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 10:22:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611087336] [2024-09-25 10:22:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611087336] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:22:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:22:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:22:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229106923] [2024-09-25 10:22:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:22:34,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:22:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:22:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:22:34,869 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:34,925 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-25 10:22:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:22:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-25 10:22:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:34,927 INFO L225 Difference]: With dead ends: 28 [2024-09-25 10:22:34,929 INFO L226 Difference]: Without dead ends: 17 [2024-09-25 10:22:34,929 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 10:22:34,931 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:34,933 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-25 10:22:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-25 10:22:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 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 10:22:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-25 10:22:34,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-25 10:22:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:34,939 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-25 10:22:34,939 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:34,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-25 10:22:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 10:22:34,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:34,940 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:34,941 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 10:22:34,941 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:34,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-09-25 10:22:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919089969] [2024-09-25 10:22:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919089969] [2024-09-25 10:22:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919089969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567809555] [2024-09-25 10:22:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:35,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:35,150 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 10:22:35,152 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 10:22:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-25 10:22:35,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:35,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:22:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567809555] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:22:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:22:35,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-25 10:22:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417780876] [2024-09-25 10:22:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:22:35,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 10:22:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 10:22:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-25 10:22:35,285 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:35,354 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-25 10:22:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 10:22:35,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-25 10:22:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:35,356 INFO L225 Difference]: With dead ends: 29 [2024-09-25 10:22:35,356 INFO L226 Difference]: Without dead ends: 27 [2024-09-25 10:22:35,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:22:35,360 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:35,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-25 10:22:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-25 10:22:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-25 10:22:35,372 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-25 10:22:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:35,373 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-25 10:22:35,373 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:22:35,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-25 10:22:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-25 10:22:35,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:35,375 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:35,393 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 10:22:35,575 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 10:22:35,576 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:35,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-09-25 10:22:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59906559] [2024-09-25 10:22:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:35,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-25 10:22:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59906559] [2024-09-25 10:22:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59906559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777848841] [2024-09-25 10:22:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:35,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:35,700 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 10:22:35,702 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 10:22:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:35,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 10:22:35,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:35,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777848841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:35,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:35,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-25 10:22:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166038191] [2024-09-25 10:22:35,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:35,865 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 10:22:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 10:22:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:22:35,866 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 10:22:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:35,914 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-25 10:22:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 10:22:35,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-25 10:22:35,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:35,917 INFO L225 Difference]: With dead ends: 38 [2024-09-25 10:22:35,919 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 10:22:35,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:22:35,922 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:35,922 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 10:22:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 10:22:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-25 10:22:35,934 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-25 10:22:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:35,934 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-25 10:22:35,935 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 10:22:35,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-25 10:22:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 10:22:35,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:35,938 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:35,955 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:36,138 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 10:22:36,139 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:36,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-09-25 10:22:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891427019] [2024-09-25 10:22:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:22:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891427019] [2024-09-25 10:22:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891427019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155834826] [2024-09-25 10:22:36,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:22:36,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:36,294 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 10:22:36,296 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 10:22:36,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:22:36,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:36,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 10:22:36,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:36,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:22:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155834826] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:36,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-25 10:22:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794028376] [2024-09-25 10:22:36,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:36,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 10:22:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 10:22:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:22:36,499 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 10:22:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:36,558 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-25 10:22:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 10:22:36,559 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-25 10:22:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:36,560 INFO L225 Difference]: With dead ends: 37 [2024-09-25 10:22:36,560 INFO L226 Difference]: Without dead ends: 35 [2024-09-25 10:22:36,561 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:22:36,561 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:36,562 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-25 10:22:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-25 10:22:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-25 10:22:36,568 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-25 10:22:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:36,568 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-25 10:22:36,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 10:22:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-25 10:22:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-25 10:22:36,572 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:36,572 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:36,585 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 10:22:36,773 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 10:22:36,773 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:36,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-09-25 10:22:36,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:36,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267422678] [2024-09-25 10:22:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:36,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:22:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:22:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:36,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267422678] [2024-09-25 10:22:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267422678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092203075] [2024-09-25 10:22:36,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:22:36,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:36,882 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 10:22:36,893 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 10:22:36,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-25 10:22:36,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:36,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 10:22:36,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:36,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092203075] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:37,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-25 10:22:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048312479] [2024-09-25 10:22:37,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:37,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 10:22:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:37,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 10:22:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:22:37,045 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:37,101 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-25 10:22:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:22:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-09-25 10:22:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:37,103 INFO L225 Difference]: With dead ends: 49 [2024-09-25 10:22:37,103 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 10:22:37,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:22:37,104 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:37,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 10:22:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 10:22:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-25 10:22:37,110 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-25 10:22:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:37,110 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-25 10:22:37,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:37,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-25 10:22:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-25 10:22:37,112 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:37,112 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:37,126 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:37,316 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 10:22:37,317 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:37,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-09-25 10:22:37,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:37,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418786667] [2024-09-25 10:22:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:37,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:37,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:22:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:37,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-25 10:22:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418786667] [2024-09-25 10:22:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418786667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556149389] [2024-09-25 10:22:37,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:22:37,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:37,486 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 10:22:37,488 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 10:22:37,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:22:37,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:37,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 10:22:37,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:37,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:22:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556149389] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:37,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:37,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-25 10:22:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659966372] [2024-09-25 10:22:37,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:37,681 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 10:22:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 10:22:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:22:37,682 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:37,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:37,756 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-25 10:22:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:22:37,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-25 10:22:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:37,758 INFO L225 Difference]: With dead ends: 45 [2024-09-25 10:22:37,758 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 10:22:37,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:22:37,759 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:37,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 10:22:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-25 10:22:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-25 10:22:37,770 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-25 10:22:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:37,771 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-25 10:22:37,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:22:37,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-25 10:22:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-25 10:22:37,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:37,772 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:37,789 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 10:22:37,976 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 10:22:37,977 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:37,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-09-25 10:22:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:37,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705208062] [2024-09-25 10:22:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:37,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:22:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-25 10:22:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-25 10:22:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705208062] [2024-09-25 10:22:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705208062] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683532834] [2024-09-25 10:22:38,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:22:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:38,110 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 10:22:38,118 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 10:22:38,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-25 10:22:38,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:38,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 10:22:38,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683532834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:38,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-25 10:22:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175596838] [2024-09-25 10:22:38,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:38,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 10:22:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 10:22:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:22:38,310 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:38,368 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-25 10:22:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 10:22:38,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-09-25 10:22:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:38,370 INFO L225 Difference]: With dead ends: 60 [2024-09-25 10:22:38,370 INFO L226 Difference]: Without dead ends: 40 [2024-09-25 10:22:38,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:22:38,373 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:38,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-25 10:22:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-25 10:22:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-25 10:22:38,383 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-25 10:22:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:38,384 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-25 10:22:38,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:38,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-25 10:22:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 10:22:38,385 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:38,385 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:38,402 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 10:22:38,585 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 10:22:38,586 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:38,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-09-25 10:22:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389641309] [2024-09-25 10:22:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-25 10:22:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-25 10:22:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:22:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:38,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389641309] [2024-09-25 10:22:38,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389641309] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:38,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232680492] [2024-09-25 10:22:38,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:22:38,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:38,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:38,736 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 10:22:38,744 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 10:22:38,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-25 10:22:38,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:38,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 10:22:38,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:22:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232680492] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:38,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:38,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-25 10:22:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774125422] [2024-09-25 10:22:38,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:38,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 10:22:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 10:22:38,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:22:38,933 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:39,004 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-25 10:22:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 10:22:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-25 10:22:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:39,006 INFO L225 Difference]: With dead ends: 53 [2024-09-25 10:22:39,006 INFO L226 Difference]: Without dead ends: 51 [2024-09-25 10:22:39,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:22:39,006 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:39,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-25 10:22:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-25 10:22:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-25 10:22:39,014 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-25 10:22:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:39,014 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-25 10:22:39,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:22:39,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-25 10:22:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 10:22:39,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:39,015 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:39,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:39,219 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 10:22:39,220 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:39,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:39,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-09-25 10:22:39,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:39,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821232615] [2024-09-25 10:22:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:39,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-25 10:22:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-25 10:22:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:22:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:22:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:39,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821232615] [2024-09-25 10:22:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821232615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974440668] [2024-09-25 10:22:39,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:22:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:39,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:39,366 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 10:22:39,367 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 10:22:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:39,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 10:22:39,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:39,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974440668] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:39,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-25 10:22:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310905928] [2024-09-25 10:22:39,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:39,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 10:22:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 10:22:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:22:39,593 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:39,661 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-25 10:22:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 10:22:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-09-25 10:22:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:39,662 INFO L225 Difference]: With dead ends: 71 [2024-09-25 10:22:39,662 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 10:22:39,663 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:22:39,665 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:39,666 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 10:22:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-25 10:22:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-25 10:22:39,674 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-25 10:22:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:39,675 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-25 10:22:39,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:39,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-25 10:22:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-25 10:22:39,676 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:39,676 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:39,692 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:39,876 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 10:22:39,877 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:39,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-09-25 10:22:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:39,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258411106] [2024-09-25 10:22:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:39,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-25 10:22:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-25 10:22:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:22:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:22:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:40,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258411106] [2024-09-25 10:22:40,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258411106] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700202628] [2024-09-25 10:22:40,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:22:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:40,036 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 10:22:40,037 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 10:22:40,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:22:40,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:40,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-25 10:22:40,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:40,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 10:22:40,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700202628] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:40,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:40,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-25 10:22:40,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017826316] [2024-09-25 10:22:40,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:40,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 10:22:40,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:40,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 10:22:40,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:22:40,257 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:40,331 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-25 10:22:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 10:22:40,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-25 10:22:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:40,332 INFO L225 Difference]: With dead ends: 61 [2024-09-25 10:22:40,332 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 10:22:40,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:22:40,333 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:40,333 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 10:22:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-25 10:22:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-25 10:22:40,340 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-25 10:22:40,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:40,341 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-25 10:22:40,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:22:40,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-25 10:22:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-25 10:22:40,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:40,342 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:40,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:40,543 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 10:22:40,543 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:40,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-09-25 10:22:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591333215] [2024-09-25 10:22:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-25 10:22:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-25 10:22:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:22:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:22:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:22:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591333215] [2024-09-25 10:22:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591333215] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:40,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291067285] [2024-09-25 10:22:40,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:22:40,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:40,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:40,734 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 10:22:40,735 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 10:22:40,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 10:22:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:40,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 10:22:40,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:40,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291067285] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:40,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-25 10:22:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160780000] [2024-09-25 10:22:40,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:40,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 10:22:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 10:22:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:22:40,991 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:41,055 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-25 10:22:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 10:22:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-09-25 10:22:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:41,057 INFO L225 Difference]: With dead ends: 82 [2024-09-25 10:22:41,057 INFO L226 Difference]: Without dead ends: 56 [2024-09-25 10:22:41,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:22:41,058 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:41,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-25 10:22:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-25 10:22:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-25 10:22:41,071 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-25 10:22:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:41,071 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-25 10:22:41,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:41,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-25 10:22:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-25 10:22:41,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:41,074 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:41,091 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:41,274 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 10:22:41,275 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:41,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-09-25 10:22:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092099663] [2024-09-25 10:22:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-25 10:22:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:22:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:22:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:22:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:22:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092099663] [2024-09-25 10:22:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092099663] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573746661] [2024-09-25 10:22:41,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:22:41,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:41,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:41,465 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 10:22:41,466 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 10:22:41,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:22:41,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:41,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 10:22:41,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:41,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 10:22:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573746661] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:41,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-25 10:22:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424902768] [2024-09-25 10:22:41,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:41,725 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 10:22:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 10:22:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:22:41,726 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:41,790 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-25 10:22:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 10:22:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-25 10:22:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:41,792 INFO L225 Difference]: With dead ends: 69 [2024-09-25 10:22:41,792 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 10:22:41,792 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-25 10:22:41,793 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:41,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:22:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 10:22:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-25 10:22:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-25 10:22:41,802 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-25 10:22:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:41,802 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-25 10:22:41,803 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:22:41,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-25 10:22:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-25 10:22:41,804 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:41,804 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:41,820 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 10:22:42,008 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 10:22:42,009 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:42,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-09-25 10:22:42,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:42,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456149703] [2024-09-25 10:22:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-25 10:22:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:22:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:22:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:22:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:22:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:22:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456149703] [2024-09-25 10:22:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456149703] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541239336] [2024-09-25 10:22:42,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:22:42,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:42,216 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 10:22:42,217 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 10:22:42,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-25 10:22:42,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:42,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 10:22:42,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:42,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541239336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:42,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:42,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-25 10:22:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242471655] [2024-09-25 10:22:42,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:42,460 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 10:22:42,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 10:22:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:22:42,461 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:42,530 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-25 10:22:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 10:22:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-09-25 10:22:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:42,531 INFO L225 Difference]: With dead ends: 93 [2024-09-25 10:22:42,532 INFO L226 Difference]: Without dead ends: 64 [2024-09-25 10:22:42,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:22:42,534 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:42,535 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-25 10:22:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-25 10:22:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-25 10:22:42,552 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-25 10:22:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:42,553 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-25 10:22:42,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:42,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-25 10:22:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 10:22:42,558 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:42,558 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:42,575 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 10:22:42,762 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 10:22:42,763 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:42,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-09-25 10:22:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708229494] [2024-09-25 10:22:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 10:22:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:22:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:22:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:22:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:22:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:22:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708229494] [2024-09-25 10:22:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708229494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466782743] [2024-09-25 10:22:42,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:22:42,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:42,964 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 10:22:42,967 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 10:22:43,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-25 10:22:43,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:43,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 10:22:43,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:43,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:22:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466782743] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:43,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-25 10:22:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846347734] [2024-09-25 10:22:43,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:43,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 10:22:43,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 10:22:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-25 10:22:43,228 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:43,303 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-25 10:22:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 10:22:43,304 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-25 10:22:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:43,305 INFO L225 Difference]: With dead ends: 77 [2024-09-25 10:22:43,305 INFO L226 Difference]: Without dead ends: 75 [2024-09-25 10:22:43,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:22:43,306 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:43,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-25 10:22:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-25 10:22:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-25 10:22:43,319 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-25 10:22:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:43,320 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-25 10:22:43,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:22:43,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-25 10:22:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-25 10:22:43,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:43,322 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:43,339 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 10:22:43,525 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 10:22:43,526 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:43,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:43,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-09-25 10:22:43,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269389343] [2024-09-25 10:22:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 10:22:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:22:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:22:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:22:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:22:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:22:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:22:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:43,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:43,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269389343] [2024-09-25 10:22:43,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269389343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:43,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212573170] [2024-09-25 10:22:43,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:22:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:43,765 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 10:22:43,766 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 10:22:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:43,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 10:22:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:43,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212573170] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:44,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:44,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-25 10:22:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019798864] [2024-09-25 10:22:44,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:44,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 10:22:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 10:22:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-25 10:22:44,051 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:44,132 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-25 10:22:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 10:22:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 68 [2024-09-25 10:22:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:44,134 INFO L225 Difference]: With dead ends: 104 [2024-09-25 10:22:44,134 INFO L226 Difference]: Without dead ends: 72 [2024-09-25 10:22:44,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-25 10:22:44,136 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:44,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-25 10:22:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-25 10:22:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-25 10:22:44,146 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-25 10:22:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:44,146 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-25 10:22:44,146 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:44,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-25 10:22:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-25 10:22:44,147 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:44,147 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:44,164 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:44,348 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 10:22:44,348 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:44,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-09-25 10:22:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217095421] [2024-09-25 10:22:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:22:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 10:22:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:22:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:22:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:22:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:22:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:22:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217095421] [2024-09-25 10:22:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217095421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089781550] [2024-09-25 10:22:44,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:22:44,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:44,534 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:44,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 10:22:44,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:22:44,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:44,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:22:44,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:44,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:22:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089781550] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:44,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-25 10:22:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775817475] [2024-09-25 10:22:44,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:44,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 10:22:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 10:22:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:22:44,842 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:44,926 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-25 10:22:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 10:22:44,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-25 10:22:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:44,927 INFO L225 Difference]: With dead ends: 85 [2024-09-25 10:22:44,927 INFO L226 Difference]: Without dead ends: 83 [2024-09-25 10:22:44,928 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-25 10:22:44,928 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:44,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-25 10:22:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-25 10:22:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-25 10:22:44,939 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-25 10:22:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:44,939 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-25 10:22:44,939 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:22:44,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-25 10:22:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-25 10:22:44,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:44,940 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:44,958 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:45,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-25 10:22:45,141 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:45,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:45,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-09-25 10:22:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524468448] [2024-09-25 10:22:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:22:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 10:22:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:22:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:22:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:22:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:22:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:22:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:22:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:45,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524468448] [2024-09-25 10:22:45,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524468448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053818169] [2024-09-25 10:22:45,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:22:45,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:45,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:45,404 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 10:22:45,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-25 10:22:45,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:45,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 10:22:45,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:45,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053818169] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:45,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-25 10:22:45,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760351366] [2024-09-25 10:22:45,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:45,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 10:22:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 10:22:45,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:22:45,731 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:45,875 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-25 10:22:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 10:22:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-09-25 10:22:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:45,876 INFO L225 Difference]: With dead ends: 115 [2024-09-25 10:22:45,876 INFO L226 Difference]: Without dead ends: 80 [2024-09-25 10:22:45,877 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:22:45,878 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:45,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-25 10:22:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-25 10:22:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-25 10:22:45,886 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-25 10:22:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:45,886 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-25 10:22:45,886 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:45,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-25 10:22:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-25 10:22:45,887 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:45,887 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:45,904 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:46,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:46,088 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:46,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-09-25 10:22:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:46,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559986175] [2024-09-25 10:22:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:22:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 10:22:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:22:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:22:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:22:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:22:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:22:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:22:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559986175] [2024-09-25 10:22:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559986175] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391951197] [2024-09-25 10:22:46,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:22:46,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:46,322 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:46,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 10:22:46,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:22:46,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:46,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 10:22:46,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:46,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 10:22:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391951197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:46,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-25 10:22:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291831842] [2024-09-25 10:22:46,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:46,641 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-25 10:22:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:46,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-25 10:22:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-25 10:22:46,642 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:46,733 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-25 10:22:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 10:22:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-25 10:22:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:46,734 INFO L225 Difference]: With dead ends: 93 [2024-09-25 10:22:46,734 INFO L226 Difference]: Without dead ends: 91 [2024-09-25 10:22:46,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:22:46,735 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:46,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-25 10:22:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-25 10:22:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-25 10:22:46,743 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-25 10:22:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:46,744 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-25 10:22:46,744 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:22:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-25 10:22:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-25 10:22:46,745 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:46,745 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:46,762 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:46,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:46,946 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:46,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-09-25 10:22:46,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:46,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579276678] [2024-09-25 10:22:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:22:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 10:22:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:22:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:22:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:22:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:22:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:22:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:22:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:22:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:47,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579276678] [2024-09-25 10:22:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579276678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927259964] [2024-09-25 10:22:47,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:22:47,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:47,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:47,256 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:47,258 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 10:22:47,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-25 10:22:47,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:47,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 10:22:47,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:47,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927259964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:47,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:47,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-09-25 10:22:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746312543] [2024-09-25 10:22:47,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:47,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 10:22:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:47,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 10:22:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-25 10:22:47,647 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:47,747 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-25 10:22:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 10:22:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 84 [2024-09-25 10:22:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:47,749 INFO L225 Difference]: With dead ends: 126 [2024-09-25 10:22:47,749 INFO L226 Difference]: Without dead ends: 88 [2024-09-25 10:22:47,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-25 10:22:47,750 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:47,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-25 10:22:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-25 10:22:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-25 10:22:47,758 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-25 10:22:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:47,759 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-25 10:22:47,759 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:47,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-25 10:22:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 10:22:47,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:47,761 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:47,776 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-25 10:22:47,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:47,966 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:47,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-09-25 10:22:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86162788] [2024-09-25 10:22:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-25 10:22:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-25 10:22:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:22:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:22:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:22:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:22:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:22:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:22:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:22:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86162788] [2024-09-25 10:22:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86162788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911021355] [2024-09-25 10:22:48,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:22:48,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:48,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:48,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:48,201 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-25 10:22:48,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-25 10:22:48,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:48,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 10:22:48,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:48,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-25 10:22:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911021355] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:48,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-25 10:22:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673023057] [2024-09-25 10:22:48,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:48,569 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 10:22:48,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:48,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 10:22:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:22:48,570 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:48,656 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-25 10:22:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 10:22:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-25 10:22:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:48,658 INFO L225 Difference]: With dead ends: 101 [2024-09-25 10:22:48,658 INFO L226 Difference]: Without dead ends: 99 [2024-09-25 10:22:48,658 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-25 10:22:48,659 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:48,659 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-25 10:22:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-25 10:22:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-25 10:22:48,666 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-25 10:22:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:48,667 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-25 10:22:48,667 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:22:48,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-25 10:22:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-25 10:22:48,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:48,668 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:48,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:48,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-25 10:22:48,873 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:48,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-09-25 10:22:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:48,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916658560] [2024-09-25 10:22:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:48,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-25 10:22:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-25 10:22:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:22:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:22:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:22:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:22:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:22:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:22:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:22:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:22:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:49,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916658560] [2024-09-25 10:22:49,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916658560] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379500713] [2024-09-25 10:22:49,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:22:49,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:49,183 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:49,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-25 10:22:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:49,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 10:22:49,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:49,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379500713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:49,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-09-25 10:22:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517772045] [2024-09-25 10:22:49,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:49,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 10:22:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 10:22:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:22:49,560 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:49,657 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-25 10:22:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 10:22:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-09-25 10:22:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:49,660 INFO L225 Difference]: With dead ends: 137 [2024-09-25 10:22:49,660 INFO L226 Difference]: Without dead ends: 96 [2024-09-25 10:22:49,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:22:49,662 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:49,662 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-25 10:22:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-25 10:22:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-25 10:22:49,669 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-25 10:22:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:49,670 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-25 10:22:49,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:49,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:49,670 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-25 10:22:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-25 10:22:49,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:49,671 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:49,687 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:49,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-25 10:22:49,871 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:49,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-09-25 10:22:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:49,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557109232] [2024-09-25 10:22:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-25 10:22:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:22:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:22:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:22:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:22:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:22:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:22:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:22:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:22:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:22:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557109232] [2024-09-25 10:22:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557109232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814428792] [2024-09-25 10:22:50,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:22:50,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:50,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:50,139 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:50,141 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-25 10:22:50,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:22:50,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:50,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-25 10:22:50,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:50,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:22:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814428792] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:50,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-25 10:22:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114671711] [2024-09-25 10:22:50,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:50,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 10:22:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 10:22:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-25 10:22:50,505 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:50,576 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-25 10:22:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 10:22:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-25 10:22:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:50,578 INFO L225 Difference]: With dead ends: 109 [2024-09-25 10:22:50,578 INFO L226 Difference]: Without dead ends: 107 [2024-09-25 10:22:50,578 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-25 10:22:50,578 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:50,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-25 10:22:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-25 10:22:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-25 10:22:50,589 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-25 10:22:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:50,589 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-25 10:22:50,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:22:50,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-25 10:22:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-25 10:22:50,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:50,591 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:50,607 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:50,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:50,791 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:50,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-09-25 10:22:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884870893] [2024-09-25 10:22:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-25 10:22:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:22:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:22:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:22:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:22:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:22:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:22:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:22:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:22:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:22:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:22:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884870893] [2024-09-25 10:22:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884870893] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183514855] [2024-09-25 10:22:51,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:22:51,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:51,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:51,175 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:51,178 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-25 10:22:51,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-25 10:22:51,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:51,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 10:22:51,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:51,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183514855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:51,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-09-25 10:22:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494289845] [2024-09-25 10:22:51,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:51,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 10:22:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 10:22:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-25 10:22:51,647 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:51,783 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-25 10:22:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-25 10:22:51,783 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 100 [2024-09-25 10:22:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:51,785 INFO L225 Difference]: With dead ends: 148 [2024-09-25 10:22:51,785 INFO L226 Difference]: Without dead ends: 104 [2024-09-25 10:22:51,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-25 10:22:51,786 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:51,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-25 10:22:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-25 10:22:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-25 10:22:51,796 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-25 10:22:51,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:51,797 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-25 10:22:51,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:51,797 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-25 10:22:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-25 10:22:51,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:51,798 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:51,815 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:51,999 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-25 10:22:51,999 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:51,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-09-25 10:22:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823284543] [2024-09-25 10:22:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:52,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-25 10:22:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:22:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:22:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:22:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:22:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:22:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:22:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:22:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:22:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:22:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:22:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823284543] [2024-09-25 10:22:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823284543] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640906690] [2024-09-25 10:22:52,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:22:52,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:52,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:52,274 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:52,276 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-25 10:22:52,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:22:52,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:52,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 10:22:52,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:52,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-25 10:22:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640906690] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:52,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-25 10:22:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807404940] [2024-09-25 10:22:52,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:52,686 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 10:22:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 10:22:52,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-25 10:22:52,687 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:52,800 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-25 10:22:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 10:22:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-25 10:22:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:52,802 INFO L225 Difference]: With dead ends: 117 [2024-09-25 10:22:52,802 INFO L226 Difference]: Without dead ends: 115 [2024-09-25 10:22:52,802 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-25 10:22:52,802 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:52,803 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-25 10:22:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-25 10:22:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-25 10:22:52,818 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-25 10:22:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:52,819 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-25 10:22:52,819 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:22:52,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-25 10:22:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-25 10:22:52,820 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:52,820 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:52,840 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:53,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-25 10:22:53,028 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:53,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:53,028 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-09-25 10:22:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:53,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904784767] [2024-09-25 10:22:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:53,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-25 10:22:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:22:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:22:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:22:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:22:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:22:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:22:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:22:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:22:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:22:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:22:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:22:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:53,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:53,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904784767] [2024-09-25 10:22:53,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904784767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:53,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143338902] [2024-09-25 10:22:53,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:22:53,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:53,381 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:53,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-25 10:22:53,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-25 10:22:53,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:53,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 10:22:53,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:53,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143338902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:53,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:53,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-09-25 10:22:53,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861128251] [2024-09-25 10:22:53,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:53,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 10:22:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:53,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 10:22:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-25 10:22:53,843 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:53,979 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-25 10:22:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-25 10:22:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-09-25 10:22:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:53,981 INFO L225 Difference]: With dead ends: 159 [2024-09-25 10:22:53,981 INFO L226 Difference]: Without dead ends: 112 [2024-09-25 10:22:53,982 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-25 10:22:53,982 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:53,982 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-25 10:22:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-25 10:22:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-25 10:22:53,991 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-25 10:22:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:53,991 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-25 10:22:53,991 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:53,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-25 10:22:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-25 10:22:53,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:53,994 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:54,011 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-25 10:22:54,195 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-25 10:22:54,196 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-09-25 10:22:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461560408] [2024-09-25 10:22:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:22:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:22:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:22:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:22:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:22:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:22:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:22:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:22:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:22:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:22:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:22:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:22:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:54,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:54,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461560408] [2024-09-25 10:22:54,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461560408] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:54,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214002774] [2024-09-25 10:22:54,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:22:54,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:54,517 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:54,519 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-25 10:22:54,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-25 10:22:54,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:54,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 10:22:54,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:54,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-25 10:22:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214002774] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:54,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-25 10:22:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569832821] [2024-09-25 10:22:54,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:54,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 10:22:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 10:22:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-25 10:22:54,913 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:55,004 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-25 10:22:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 10:22:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-25 10:22:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:55,005 INFO L225 Difference]: With dead ends: 125 [2024-09-25 10:22:55,005 INFO L226 Difference]: Without dead ends: 123 [2024-09-25 10:22:55,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:22:55,006 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:55,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-25 10:22:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-25 10:22:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-25 10:22:55,015 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-25 10:22:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:55,015 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-25 10:22:55,016 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-25 10:22:55,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-25 10:22:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-25 10:22:55,017 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:55,017 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:55,032 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-25 10:22:55,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-25 10:22:55,218 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:55,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-09-25 10:22:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:55,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776611849] [2024-09-25 10:22:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:22:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:22:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:22:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:22:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:22:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:22:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:22:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:22:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:22:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:22:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:22:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:22:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:22:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776611849] [2024-09-25 10:22:55,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776611849] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034264800] [2024-09-25 10:22:55,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:22:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:55,682 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:55,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-25 10:22:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:55,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 10:22:55,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:55,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034264800] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:56,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-09-25 10:22:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591345972] [2024-09-25 10:22:56,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:56,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 10:22:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 10:22:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-25 10:22:56,121 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:56,247 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-25 10:22:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-25 10:22:56,247 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 116 [2024-09-25 10:22:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:56,249 INFO L225 Difference]: With dead ends: 170 [2024-09-25 10:22:56,249 INFO L226 Difference]: Without dead ends: 120 [2024-09-25 10:22:56,249 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-25 10:22:56,256 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:56,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-25 10:22:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-25 10:22:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-25 10:22:56,269 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-25 10:22:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:56,270 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-25 10:22:56,270 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:56,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-25 10:22:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-25 10:22:56,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:56,271 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:56,288 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:56,475 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:56,476 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:56,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-09-25 10:22:56,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296650863] [2024-09-25 10:22:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:56,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:22:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:22:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:22:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:22:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:22:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:22:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:22:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:22:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:22:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:22:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:22:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:22:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:22:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296650863] [2024-09-25 10:22:56,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296650863] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188387849] [2024-09-25 10:22:56,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:22:56,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:56,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:56,811 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:56,812 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-25 10:22:56,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:22:56,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:56,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 10:22:56,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:56,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-25 10:22:57,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188387849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:57,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-25 10:22:57,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662251566] [2024-09-25 10:22:57,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:57,215 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 10:22:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 10:22:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:22:57,216 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:57,312 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-25 10:22:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 10:22:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-25 10:22:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:57,313 INFO L225 Difference]: With dead ends: 133 [2024-09-25 10:22:57,314 INFO L226 Difference]: Without dead ends: 131 [2024-09-25 10:22:57,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-25 10:22:57,314 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:57,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-25 10:22:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-25 10:22:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:22:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-25 10:22:57,324 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-25 10:22:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:57,324 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-25 10:22:57,324 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:22:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-25 10:22:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-25 10:22:57,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:57,326 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:57,342 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-25 10:22:57,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-25 10:22:57,527 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:57,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:57,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-09-25 10:22:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:57,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674016827] [2024-09-25 10:22:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:22:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:22:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:22:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:22:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:22:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:22:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:22:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:22:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:22:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:22:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:22:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:22:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:22:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:22:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674016827] [2024-09-25 10:22:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674016827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884947311] [2024-09-25 10:22:57,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:22:57,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:57,988 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:57,989 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-25 10:22:58,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-25 10:22:58,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:58,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 10:22:58,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:58,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884947311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:58,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:58,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-09-25 10:22:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486259513] [2024-09-25 10:22:58,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:58,493 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 10:22:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:58,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 10:22:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 10:22:58,494 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:58,653 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-25 10:22:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-25 10:22:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 124 [2024-09-25 10:22:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:58,655 INFO L225 Difference]: With dead ends: 181 [2024-09-25 10:22:58,656 INFO L226 Difference]: Without dead ends: 128 [2024-09-25 10:22:58,656 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 10:22:58,657 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:58,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-25 10:22:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-25 10:22:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:22:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-25 10:22:58,667 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-25 10:22:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:58,668 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-25 10:22:58,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:58,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-25 10:22:58,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-25 10:22:58,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:58,669 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:58,685 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-25 10:22:58,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:58,874 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:58,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-09-25 10:22:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:58,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111121808] [2024-09-25 10:22:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:22:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 10:22:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:22:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:22:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:22:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:22:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:22:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:22:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:22:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:22:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:22:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:22:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:22:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:22:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:22:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:22:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:22:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111121808] [2024-09-25 10:22:59,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111121808] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:22:59,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021797905] [2024-09-25 10:22:59,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:22:59,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:59,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:22:59,146 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:22:59,147 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-25 10:22:59,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:22:59,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:22:59,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-25 10:22:59,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:22:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:59,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:22:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 10:22:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021797905] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:22:59,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:22:59,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-25 10:22:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855964001] [2024-09-25 10:22:59,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:22:59,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 10:22:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:22:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 10:22:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-25 10:22:59,604 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:22:59,690 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-25 10:22:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 10:22:59,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-25 10:22:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:22:59,692 INFO L225 Difference]: With dead ends: 141 [2024-09-25 10:22:59,692 INFO L226 Difference]: Without dead ends: 139 [2024-09-25 10:22:59,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-25 10:22:59,692 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:22:59,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:22:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-25 10:22:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-25 10:22:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:22:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-25 10:22:59,700 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-25 10:22:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:22:59,701 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-25 10:22:59,701 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:22:59,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-25 10:22:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-25 10:22:59,702 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:22:59,702 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:22:59,719 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-25 10:22:59,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:22:59,903 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:22:59,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:22:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-09-25 10:22:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:22:59,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438924077] [2024-09-25 10:22:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:22:59,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:22:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 10:23:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:23:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:23:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:23:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:23:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:23:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:23:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:23:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:23:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:23:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:23:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:23:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:23:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:23:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:23:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438924077] [2024-09-25 10:23:00,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438924077] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131596102] [2024-09-25 10:23:00,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:00,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:00,393 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:00,395 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-25 10:23:00,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-25 10:23:00,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:00,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-25 10:23:00,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:00,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131596102] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:00,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:00,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-09-25 10:23:00,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139111912] [2024-09-25 10:23:00,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:00,944 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 10:23:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 10:23:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 10:23:00,945 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:23:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:01,091 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-25 10:23:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-25 10:23:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 132 [2024-09-25 10:23:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:01,093 INFO L225 Difference]: With dead ends: 192 [2024-09-25 10:23:01,093 INFO L226 Difference]: Without dead ends: 136 [2024-09-25 10:23:01,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 10:23:01,094 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:01,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-25 10:23:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-25 10:23:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:23:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-25 10:23:01,105 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-25 10:23:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:01,105 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-25 10:23:01,106 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:23:01,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-25 10:23:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-25 10:23:01,107 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:01,107 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:01,124 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:01,307 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-25 10:23:01,308 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:01,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:01,308 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-09-25 10:23:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:01,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823040208] [2024-09-25 10:23:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:01,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 10:23:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:23:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823040208] [2024-09-25 10:23:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823040208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481836530] [2024-09-25 10:23:01,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:23:01,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:01,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:01,706 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:01,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-25 10:23:01,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-25 10:23:01,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:01,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 10:23:01,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:01,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-25 10:23:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481836530] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:02,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-25 10:23:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147878275] [2024-09-25 10:23:02,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:02,180 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 10:23:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 10:23:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-25 10:23:02,181 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:23:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:02,303 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-25 10:23:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 10:23:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-25 10:23:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:02,305 INFO L225 Difference]: With dead ends: 149 [2024-09-25 10:23:02,305 INFO L226 Difference]: Without dead ends: 147 [2024-09-25 10:23:02,306 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:23:02,306 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:02,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-25 10:23:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-25 10:23:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-25 10:23:02,320 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-25 10:23:02,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:02,320 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-25 10:23:02,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:23:02,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-25 10:23:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-25 10:23:02,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:02,321 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:02,339 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:02,522 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:02,523 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:02,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-09-25 10:23:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242597848] [2024-09-25 10:23:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:02,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 10:23:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:23:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:23:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242597848] [2024-09-25 10:23:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242597848] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390907117] [2024-09-25 10:23:03,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:23:03,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:03,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:03,119 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:03,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-25 10:23:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:03,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 10:23:03,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:03,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390907117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:03,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:03,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-09-25 10:23:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082788770] [2024-09-25 10:23:03,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:03,687 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 10:23:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 10:23:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 10:23:03,688 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:23:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:03,903 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-25 10:23:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-25 10:23:03,904 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-09-25 10:23:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:03,905 INFO L225 Difference]: With dead ends: 203 [2024-09-25 10:23:03,905 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 10:23:03,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 10:23:03,906 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:03,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 10:23:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-25 10:23:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-25 10:23:03,918 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-25 10:23:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:03,918 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-25 10:23:03,919 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:23:03,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-25 10:23:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-25 10:23:03,920 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:03,920 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:03,937 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:04,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-25 10:23:04,121 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:04,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-09-25 10:23:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375009546] [2024-09-25 10:23:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:04,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-25 10:23:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:23:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:23:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:23:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:23:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:23:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:23:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:23:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:23:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:23:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:23:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:23:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:23:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:23:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:23:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:23:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:04,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375009546] [2024-09-25 10:23:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375009546] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302700714] [2024-09-25 10:23:04,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:23:04,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:04,464 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:04,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-25 10:23:04,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:23:04,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:04,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-25 10:23:04,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:04,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-25 10:23:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302700714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:04,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:04,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-25 10:23:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216586182] [2024-09-25 10:23:04,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:04,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 10:23:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 10:23:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:23:04,993 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:23:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:05,107 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-25 10:23:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 10:23:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-25 10:23:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:05,110 INFO L225 Difference]: With dead ends: 157 [2024-09-25 10:23:05,110 INFO L226 Difference]: Without dead ends: 155 [2024-09-25 10:23:05,111 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:23:05,111 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:05,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-25 10:23:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-25 10:23:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-25 10:23:05,125 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-25 10:23:05,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:05,126 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-25 10:23:05,126 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 10:23:05,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-25 10:23:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-25 10:23:05,127 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:05,128 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:05,144 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-25 10:23:05,328 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-25 10:23:05,329 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:05,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-09-25 10:23:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:05,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10731877] [2024-09-25 10:23:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-25 10:23:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:23:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:23:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:23:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:23:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:23:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:23:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:23:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:23:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:23:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:23:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:23:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:23:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:23:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:23:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:23:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:23:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10731877] [2024-09-25 10:23:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10731877] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887701331] [2024-09-25 10:23:05,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:23:05,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:05,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:05,910 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:05,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-25 10:23:05,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-25 10:23:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:06,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 10:23:06,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:06,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887701331] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:06,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-09-25 10:23:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806541409] [2024-09-25 10:23:06,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:06,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 10:23:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 10:23:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 10:23:06,583 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:06,786 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-25 10:23:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-25 10:23:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 148 [2024-09-25 10:23:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:06,788 INFO L225 Difference]: With dead ends: 214 [2024-09-25 10:23:06,788 INFO L226 Difference]: Without dead ends: 152 [2024-09-25 10:23:06,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 10:23:06,789 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:06,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-25 10:23:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-25 10:23:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-25 10:23:06,801 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-25 10:23:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:06,801 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-25 10:23:06,801 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:06,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-25 10:23:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-25 10:23:06,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:06,803 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:06,819 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-25 10:23:07,006 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-25 10:23:07,007 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:07,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-09-25 10:23:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021582150] [2024-09-25 10:23:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:23:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:23:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:23:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:23:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:23:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:23:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:23:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:23:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:23:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:23:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:23:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:23:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:23:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:23:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:23:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:23:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:23:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021582150] [2024-09-25 10:23:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021582150] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235444568] [2024-09-25 10:23:07,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:23:07,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:07,441 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:07,442 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-25 10:23:07,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:23:07,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:07,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 10:23:07,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:07,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-25 10:23:08,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235444568] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:08,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:08,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-25 10:23:08,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678956053] [2024-09-25 10:23:08,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:08,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 10:23:08,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 10:23:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:23:08,009 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:08,142 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-25 10:23:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 10:23:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-25 10:23:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:08,144 INFO L225 Difference]: With dead ends: 165 [2024-09-25 10:23:08,144 INFO L226 Difference]: Without dead ends: 163 [2024-09-25 10:23:08,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-25 10:23:08,145 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:08,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-25 10:23:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-25 10:23:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-25 10:23:08,157 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-25 10:23:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:08,158 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-25 10:23:08,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:23:08,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-25 10:23:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-25 10:23:08,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:08,159 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:08,176 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:08,361 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-25 10:23:08,361 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:08,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-09-25 10:23:08,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:08,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954820752] [2024-09-25 10:23:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 10:23:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:23:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:23:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:23:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:23:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:23:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:23:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:23:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:23:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:23:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:23:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:23:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:23:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:23:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:23:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:23:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:23:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:23:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:09,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954820752] [2024-09-25 10:23:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954820752] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639319327] [2024-09-25 10:23:09,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:09,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:09,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:09,029 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:09,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-25 10:23:09,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-25 10:23:09,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:09,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-25 10:23:09,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:09,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639319327] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:09,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-09-25 10:23:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573962102] [2024-09-25 10:23:09,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:09,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-25 10:23:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-25 10:23:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 10:23:09,754 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:09,947 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-25 10:23:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-25 10:23:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-09-25 10:23:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:09,949 INFO L225 Difference]: With dead ends: 225 [2024-09-25 10:23:09,949 INFO L226 Difference]: Without dead ends: 160 [2024-09-25 10:23:09,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 10:23:09,950 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:09,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-25 10:23:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-25 10:23:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-25 10:23:09,963 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-25 10:23:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:09,963 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-25 10:23:09,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:09,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-25 10:23:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-25 10:23:09,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:09,964 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:09,979 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:10,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-25 10:23:10,169 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-09-25 10:23:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748188047] [2024-09-25 10:23:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:23:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:23:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:23:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:23:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:23:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:23:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:23:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:23:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:23:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:23:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:23:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:23:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:23:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:23:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:23:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:23:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:23:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:23:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748188047] [2024-09-25 10:23:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748188047] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441741761] [2024-09-25 10:23:10,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:23:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:10,708 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:10,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-25 10:23:10,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-25 10:23:10,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:10,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-25 10:23:10,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:10,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-25 10:23:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441741761] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:11,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-25 10:23:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409728979] [2024-09-25 10:23:11,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:11,283 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-25 10:23:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-25 10:23:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-25 10:23:11,283 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:11,436 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-25 10:23:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 10:23:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-25 10:23:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:11,438 INFO L225 Difference]: With dead ends: 173 [2024-09-25 10:23:11,439 INFO L226 Difference]: Without dead ends: 171 [2024-09-25 10:23:11,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-25 10:23:11,439 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:11,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-25 10:23:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-25 10:23:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-25 10:23:11,462 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-25 10:23:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:11,464 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-25 10:23:11,464 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-25 10:23:11,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-25 10:23:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-25 10:23:11,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:11,465 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:11,483 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:11,669 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-25 10:23:11,670 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:11,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-09-25 10:23:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959162962] [2024-09-25 10:23:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:23:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:23:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:23:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:23:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:23:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:23:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:23:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:23:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:23:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:23:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:23:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:23:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:23:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:23:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:23:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:23:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:23:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:23:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:23:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959162962] [2024-09-25 10:23:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959162962] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247464321] [2024-09-25 10:23:12,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:23:12,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:12,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:12,443 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:12,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-25 10:23:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:12,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 10:23:12,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:12,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247464321] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:13,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:13,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-09-25 10:23:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881277426] [2024-09-25 10:23:13,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:13,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-25 10:23:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-25 10:23:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 10:23:13,189 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:13,381 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-25 10:23:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-25 10:23:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 164 [2024-09-25 10:23:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:13,383 INFO L225 Difference]: With dead ends: 236 [2024-09-25 10:23:13,383 INFO L226 Difference]: Without dead ends: 168 [2024-09-25 10:23:13,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 10:23:13,384 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:13,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-25 10:23:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-25 10:23:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-25 10:23:13,398 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-25 10:23:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:13,398 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-25 10:23:13,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:13,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-25 10:23:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-25 10:23:13,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:13,400 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:13,418 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:13,601 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-25 10:23:13,601 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:13,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-09-25 10:23:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678308570] [2024-09-25 10:23:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:23:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:23:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:23:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:23:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:23:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:23:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:23:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:23:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:23:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:23:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:23:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:23:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:23:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:23:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:23:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:23:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:23:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:23:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:23:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:14,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678308570] [2024-09-25 10:23:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678308570] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630167790] [2024-09-25 10:23:14,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:23:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:14,070 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:14,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-25 10:23:14,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:23:14,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:14,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-25 10:23:14,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:14,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-25 10:23:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630167790] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:14,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:14,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-25 10:23:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211568576] [2024-09-25 10:23:14,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:14,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 10:23:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 10:23:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-25 10:23:14,698 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:14,825 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-25 10:23:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 10:23:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-25 10:23:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:14,826 INFO L225 Difference]: With dead ends: 181 [2024-09-25 10:23:14,826 INFO L226 Difference]: Without dead ends: 179 [2024-09-25 10:23:14,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-25 10:23:14,827 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:14,827 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-25 10:23:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-25 10:23:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-25 10:23:14,840 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-25 10:23:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:14,841 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-25 10:23:14,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:23:14,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-25 10:23:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-25 10:23:14,842 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:14,842 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:14,855 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-25 10:23:15,043 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:15,043 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:15,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-09-25 10:23:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740768870] [2024-09-25 10:23:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 10:23:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:23:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:23:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:23:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:23:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:23:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:23:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:23:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:23:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:23:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:23:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:23:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:23:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:23:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:23:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:23:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:23:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:23:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:23:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:23:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740768870] [2024-09-25 10:23:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740768870] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356231216] [2024-09-25 10:23:15,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:23:15,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:15,820 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:15,821 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-25 10:23:15,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-25 10:23:15,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:15,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-25 10:23:15,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:16,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356231216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:16,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-09-25 10:23:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75184469] [2024-09-25 10:23:16,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:16,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-25 10:23:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-25 10:23:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 10:23:16,605 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:16,815 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-25 10:23:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-25 10:23:16,815 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-09-25 10:23:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:16,817 INFO L225 Difference]: With dead ends: 247 [2024-09-25 10:23:16,817 INFO L226 Difference]: Without dead ends: 176 [2024-09-25 10:23:16,818 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 10:23:16,819 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:16,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-25 10:23:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-25 10:23:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-25 10:23:16,846 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-25 10:23:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:16,846 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-25 10:23:16,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:16,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-25 10:23:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-25 10:23:16,848 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:16,848 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:16,865 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:17,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-25 10:23:17,048 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:17,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-09-25 10:23:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197727152] [2024-09-25 10:23:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:23:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:23:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:23:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:23:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:23:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:23:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:23:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:23:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:23:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:23:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:23:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:23:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:23:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:23:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:23:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:23:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:23:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:23:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:23:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:23:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197727152] [2024-09-25 10:23:17,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197727152] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:17,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296961837] [2024-09-25 10:23:17,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:23:17,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:17,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:17,592 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:17,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-25 10:23:17,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:23:17,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:17,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-25 10:23:17,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:17,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-25 10:23:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296961837] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:18,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-25 10:23:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473719585] [2024-09-25 10:23:18,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:18,235 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-25 10:23:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-25 10:23:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-25 10:23:18,236 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:18,357 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-25 10:23:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-25 10:23:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-25 10:23:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:18,359 INFO L225 Difference]: With dead ends: 189 [2024-09-25 10:23:18,359 INFO L226 Difference]: Without dead ends: 187 [2024-09-25 10:23:18,360 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-25 10:23:18,362 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:18,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-25 10:23:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-25 10:23:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-25 10:23:18,378 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-25 10:23:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:18,380 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-25 10:23:18,380 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 10:23:18,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-25 10:23:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-25 10:23:18,381 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:18,381 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:18,399 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-25 10:23:18,582 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:18,583 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:18,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-09-25 10:23:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970702448] [2024-09-25 10:23:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:18,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 10:23:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:23:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:23:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:23:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:23:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:23:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:23:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:23:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:23:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:23:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:23:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:23:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:23:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:23:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:23:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:23:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:23:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:23:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:23:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:23:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:23:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:19,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970702448] [2024-09-25 10:23:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970702448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:19,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371965720] [2024-09-25 10:23:19,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:19,418 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:19,420 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-25 10:23:19,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-25 10:23:19,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:19,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-25 10:23:19,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:19,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371965720] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:20,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-09-25 10:23:20,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120211390] [2024-09-25 10:23:20,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:20,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-25 10:23:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-25 10:23:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-25 10:23:20,209 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:20,422 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-25 10:23:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-25 10:23:20,422 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 180 [2024-09-25 10:23:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:20,424 INFO L225 Difference]: With dead ends: 258 [2024-09-25 10:23:20,424 INFO L226 Difference]: Without dead ends: 184 [2024-09-25 10:23:20,424 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-25 10:23:20,425 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:20,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-25 10:23:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-25 10:23:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-25 10:23:20,440 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-25 10:23:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:20,440 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-25 10:23:20,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:20,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-25 10:23:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-25 10:23:20,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:20,442 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:20,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-25 10:23:20,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:20,642 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:20,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-09-25 10:23:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:20,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573201045] [2024-09-25 10:23:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:20,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:23:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:23:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:23:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:23:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:23:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:23:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:23:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:23:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:23:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:23:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:23:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:23:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:23:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:23:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:23:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:23:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:23:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:23:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:23:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:23:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:23:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573201045] [2024-09-25 10:23:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573201045] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234575771] [2024-09-25 10:23:21,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:23:21,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:21,116 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:21,117 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-25 10:23:21,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-25 10:23:21,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:21,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-25 10:23:21,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:21,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-25 10:23:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234575771] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:21,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-25 10:23:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486830575] [2024-09-25 10:23:21,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:21,814 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 10:23:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 10:23:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-25 10:23:21,815 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:21,955 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-25 10:23:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-25 10:23:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-25 10:23:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:21,957 INFO L225 Difference]: With dead ends: 197 [2024-09-25 10:23:21,957 INFO L226 Difference]: Without dead ends: 195 [2024-09-25 10:23:21,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-25 10:23:21,958 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:21,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-25 10:23:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-25 10:23:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-25 10:23:21,972 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-25 10:23:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:21,973 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-25 10:23:21,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:23:21,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-25 10:23:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-25 10:23:21,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:21,974 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:21,991 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-25 10:23:22,175 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-25 10:23:22,175 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:22,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-09-25 10:23:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741030473] [2024-09-25 10:23:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:22,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-25 10:23:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:23:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:23:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:23:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:23:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:23:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:23:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:23:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:23:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:23:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:23:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:23:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:23:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:23:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:23:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:23:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:22,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:23:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:23:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:23:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:23:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:23:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:23:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741030473] [2024-09-25 10:23:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741030473] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459101880] [2024-09-25 10:23:23,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:23:23,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:23,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:23,006 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:23,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-25 10:23:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:23,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-25 10:23:23,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:23,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459101880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:23,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-09-25 10:23:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105655688] [2024-09-25 10:23:23,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:23,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-25 10:23:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-25 10:23:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 10:23:23,905 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:24,115 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-25 10:23:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-25 10:23:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-09-25 10:23:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:24,117 INFO L225 Difference]: With dead ends: 269 [2024-09-25 10:23:24,117 INFO L226 Difference]: Without dead ends: 192 [2024-09-25 10:23:24,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 10:23:24,118 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:24,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-25 10:23:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-25 10:23:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-25 10:23:24,134 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-25 10:23:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:24,135 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-25 10:23:24,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:24,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-25 10:23:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-25 10:23:24,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:24,136 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:24,153 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:24,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-25 10:23:24,337 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:24,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-09-25 10:23:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736483393] [2024-09-25 10:23:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:23:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:23:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:23:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:23:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:23:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:23:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:23:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:23:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:23:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736483393] [2024-09-25 10:23:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736483393] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119275835] [2024-09-25 10:23:24,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:23:24,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:24,842 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:24,844 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-25 10:23:24,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:23:24,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:24,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-25 10:23:24,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:25,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-25 10:23:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119275835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:25,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-25 10:23:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837888372] [2024-09-25 10:23:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:25,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 10:23:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 10:23:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-25 10:23:25,604 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:25,737 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-25 10:23:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-25 10:23:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-25 10:23:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:25,739 INFO L225 Difference]: With dead ends: 205 [2024-09-25 10:23:25,739 INFO L226 Difference]: Without dead ends: 203 [2024-09-25 10:23:25,740 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-25 10:23:25,740 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:25,740 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-25 10:23:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-25 10:23:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-25 10:23:25,751 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-25 10:23:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:25,752 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-25 10:23:25,752 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:23:25,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-25 10:23:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-25 10:23:25,753 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:25,753 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:25,765 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:25,953 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:25,953 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:25,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-09-25 10:23:25,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:25,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981601129] [2024-09-25 10:23:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 10:23:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:23:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:23:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:23:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:23:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:23:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:23:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:23:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:23:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:23:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981601129] [2024-09-25 10:23:26,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981601129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395330224] [2024-09-25 10:23:26,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:23:26,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:26,835 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:26,837 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-25 10:23:26,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-25 10:23:26,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:26,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-25 10:23:26,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:27,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395330224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:27,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-09-25 10:23:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806380514] [2024-09-25 10:23:27,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:27,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-25 10:23:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-25 10:23:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 10:23:27,719 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:27,935 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-25 10:23:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-25 10:23:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 196 [2024-09-25 10:23:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:27,937 INFO L225 Difference]: With dead ends: 280 [2024-09-25 10:23:27,937 INFO L226 Difference]: Without dead ends: 200 [2024-09-25 10:23:27,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 10:23:27,938 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:27,938 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-25 10:23:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-25 10:23:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-25 10:23:27,955 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-25 10:23:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:27,955 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-25 10:23:27,955 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:27,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-25 10:23:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-25 10:23:27,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:27,957 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:27,972 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:28,157 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:28,157 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-09-25 10:23:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706752806] [2024-09-25 10:23:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:23:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:23:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:23:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:23:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:23:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:23:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:23:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:23:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:23:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:23:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:23:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:23:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:23:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:23:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:23:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:23:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:23:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:23:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:23:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:23:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:23:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:23:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706752806] [2024-09-25 10:23:28,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706752806] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022582548] [2024-09-25 10:23:28,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:23:28,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:28,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:28,695 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:28,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-25 10:23:28,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:23:28,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:28,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-25 10:23:28,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:28,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-25 10:23:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022582548] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:29,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-25 10:23:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182498814] [2024-09-25 10:23:29,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:29,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 10:23:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 10:23:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-25 10:23:29,418 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:29,559 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-25 10:23:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 10:23:29,559 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-25 10:23:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:29,561 INFO L225 Difference]: With dead ends: 213 [2024-09-25 10:23:29,561 INFO L226 Difference]: Without dead ends: 211 [2024-09-25 10:23:29,561 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 10:23:29,562 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:29,562 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-25 10:23:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-25 10:23:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-25 10:23:29,584 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-25 10:23:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:29,584 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-25 10:23:29,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:23:29,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-25 10:23:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-25 10:23:29,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:29,585 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:29,597 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:29,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-25 10:23:29,786 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:29,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-09-25 10:23:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:29,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676276032] [2024-09-25 10:23:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:23:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:23:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:23:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:23:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:23:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:23:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:23:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:23:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:23:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:23:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:23:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:23:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:23:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:23:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:23:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:23:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:23:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:23:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:23:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:23:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:23:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:23:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:23:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:23:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:30,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676276032] [2024-09-25 10:23:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676276032] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483867332] [2024-09-25 10:23:30,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:30,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:30,714 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:30,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-25 10:23:30,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-25 10:23:30,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:30,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-25 10:23:30,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:30,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483867332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:31,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-09-25 10:23:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482030021] [2024-09-25 10:23:31,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:31,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-25 10:23:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-25 10:23:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 10:23:31,667 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:31,871 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-25 10:23:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-25 10:23:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-09-25 10:23:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:31,873 INFO L225 Difference]: With dead ends: 291 [2024-09-25 10:23:31,873 INFO L226 Difference]: Without dead ends: 208 [2024-09-25 10:23:31,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 10:23:31,874 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:31,874 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-25 10:23:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-25 10:23:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-25 10:23:31,891 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-25 10:23:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:31,891 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-25 10:23:31,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:31,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-25 10:23:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-25 10:23:31,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:31,893 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:31,911 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-25 10:23:32,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-25 10:23:32,093 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:32,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-09-25 10:23:32,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:32,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991284549] [2024-09-25 10:23:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:32,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:23:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:23:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:23:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:23:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:23:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:23:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:23:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:23:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:23:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:23:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:23:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:23:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:23:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:23:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:23:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:23:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:23:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:23:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:23:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:23:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:23:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:23:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:23:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:23:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991284549] [2024-09-25 10:23:32,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991284549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102289135] [2024-09-25 10:23:32,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:23:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:32,680 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:32,680 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-25 10:23:32,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-25 10:23:32,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:32,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-25 10:23:32,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:32,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-25 10:23:33,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102289135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:33,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:33,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-25 10:23:33,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117188542] [2024-09-25 10:23:33,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:33,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-25 10:23:33,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-25 10:23:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 10:23:33,487 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:33,630 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-25 10:23:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-25 10:23:33,631 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-25 10:23:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:33,632 INFO L225 Difference]: With dead ends: 221 [2024-09-25 10:23:33,632 INFO L226 Difference]: Without dead ends: 219 [2024-09-25 10:23:33,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 10:23:33,633 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:33,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-25 10:23:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-25 10:23:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-25 10:23:33,651 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-25 10:23:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:33,652 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-25 10:23:33,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 10:23:33,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-25 10:23:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-25 10:23:33,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:33,654 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:33,672 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:33,854 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:33,854 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:33,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-09-25 10:23:33,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:33,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28222824] [2024-09-25 10:23:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:33,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:23:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:23:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:23:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:23:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:23:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:23:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:23:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:23:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:23:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:23:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:23:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:23:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:23:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:23:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:23:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:23:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:23:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:23:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:23:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:23:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:23:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:23:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:23:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:23:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:23:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28222824] [2024-09-25 10:23:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28222824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:34,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543395035] [2024-09-25 10:23:34,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:23:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:34,869 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:34,870 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-25 10:23:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:34,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-25 10:23:34,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:35,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543395035] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:35,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-09-25 10:23:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369361201] [2024-09-25 10:23:35,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:35,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-25 10:23:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-25 10:23:35,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-25 10:23:35,890 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:36,138 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-25 10:23:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-25 10:23:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 212 [2024-09-25 10:23:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:36,141 INFO L225 Difference]: With dead ends: 302 [2024-09-25 10:23:36,141 INFO L226 Difference]: Without dead ends: 216 [2024-09-25 10:23:36,142 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-25 10:23:36,142 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:36,142 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-25 10:23:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-25 10:23:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-25 10:23:36,161 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-25 10:23:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:36,161 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-25 10:23:36,161 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-25 10:23:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-25 10:23:36,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:36,163 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:36,179 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-25 10:23:36,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-25 10:23:36,363 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:36,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-09-25 10:23:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218468466] [2024-09-25 10:23:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:23:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:23:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:23:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:23:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:23:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:23:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:23:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:23:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:23:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:23:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:23:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:23:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:23:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:23:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:23:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:23:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:23:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:23:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:23:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:23:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:23:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:23:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:23:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:23:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:23:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:37,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218468466] [2024-09-25 10:23:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218468466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627820742] [2024-09-25 10:23:37,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:23:37,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:37,048 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:37,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-25 10:23:37,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:23:37,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:37,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-25 10:23:37,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:37,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-25 10:23:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627820742] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:37,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-25 10:23:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856477031] [2024-09-25 10:23:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:37,876 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 10:23:37,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 10:23:37,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 10:23:37,877 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:38,021 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-25 10:23:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-25 10:23:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-25 10:23:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:38,023 INFO L225 Difference]: With dead ends: 229 [2024-09-25 10:23:38,023 INFO L226 Difference]: Without dead ends: 227 [2024-09-25 10:23:38,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 10:23:38,024 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:38,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-25 10:23:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-25 10:23:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-25 10:23:38,056 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-25 10:23:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:38,057 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-25 10:23:38,057 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-25 10:23:38,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-25 10:23:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-25 10:23:38,058 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:38,058 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:38,075 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-09-25 10:23:38,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:38,259 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:38,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:38,259 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-09-25 10:23:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:38,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96810151] [2024-09-25 10:23:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-25 10:23:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:23:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:23:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:23:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:23:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:23:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:23:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:23:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:23:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:23:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:23:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:23:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:23:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:23:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:23:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:23:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:23:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:23:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:23:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:23:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:23:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:23:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:23:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:23:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:23:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:23:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:39,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96810151] [2024-09-25 10:23:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96810151] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853101537] [2024-09-25 10:23:39,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:23:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:39,317 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:39,318 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-25 10:23:39,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-25 10:23:39,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:39,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-25 10:23:39,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:39,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853101537] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:40,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-09-25 10:23:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785889976] [2024-09-25 10:23:40,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:40,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-25 10:23:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-25 10:23:40,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-25 10:23:40,452 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:40,735 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-25 10:23:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-25 10:23:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-09-25 10:23:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:40,737 INFO L225 Difference]: With dead ends: 313 [2024-09-25 10:23:40,737 INFO L226 Difference]: Without dead ends: 224 [2024-09-25 10:23:40,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-25 10:23:40,738 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:40,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-25 10:23:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-25 10:23:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-25 10:23:40,754 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-25 10:23:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:40,755 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-25 10:23:40,755 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:40,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-25 10:23:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-25 10:23:40,756 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:40,756 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:40,769 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:40,956 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:40,956 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:40,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-09-25 10:23:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308796754] [2024-09-25 10:23:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:40,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:23:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:23:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:23:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:23:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:23:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:23:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:23:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:23:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:23:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:23:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:23:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:23:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:23:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:23:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:23:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:23:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:23:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:23:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:23:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:23:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:23:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:23:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:23:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:23:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:23:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:23:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308796754] [2024-09-25 10:23:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308796754] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676298750] [2024-09-25 10:23:41,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:23:41,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:41,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:41,622 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:41,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-25 10:23:41,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:23:41,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:41,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-25 10:23:41,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:41,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-25 10:23:42,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676298750] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:42,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:42,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-25 10:23:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718902023] [2024-09-25 10:23:42,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:42,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 10:23:42,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 10:23:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 10:23:42,478 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:42,644 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-25 10:23:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-25 10:23:42,644 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-25 10:23:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:42,646 INFO L225 Difference]: With dead ends: 237 [2024-09-25 10:23:42,646 INFO L226 Difference]: Without dead ends: 235 [2024-09-25 10:23:42,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 10:23:42,646 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:42,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-25 10:23:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-25 10:23:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-25 10:23:42,666 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-25 10:23:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:42,666 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-25 10:23:42,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 10:23:42,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-25 10:23:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-25 10:23:42,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:42,668 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:42,685 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:42,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-25 10:23:42,869 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:42,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-09-25 10:23:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298863172] [2024-09-25 10:23:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:23:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:23:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:23:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:23:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:23:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:23:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:23:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:23:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:23:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:23:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:23:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:23:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:23:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:23:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:23:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:23:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:23:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:23:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:23:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:23:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:23:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:23:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:23:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:23:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:23:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:23:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:23:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298863172] [2024-09-25 10:23:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298863172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235962922] [2024-09-25 10:23:44,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:44,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:44,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:44,094 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-25 10:23:44,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-25 10:23:44,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:44,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-25 10:23:44,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:44,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235962922] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:45,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:45,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-09-25 10:23:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898654906] [2024-09-25 10:23:45,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:45,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-25 10:23:45,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-25 10:23:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-25 10:23:45,206 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:45,431 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-25 10:23:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-25 10:23:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 228 [2024-09-25 10:23:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:45,433 INFO L225 Difference]: With dead ends: 324 [2024-09-25 10:23:45,433 INFO L226 Difference]: Without dead ends: 232 [2024-09-25 10:23:45,434 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-25 10:23:45,434 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:45,434 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-25 10:23:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-25 10:23:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-25 10:23:45,455 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-25 10:23:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:45,455 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-25 10:23:45,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:45,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-25 10:23:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-25 10:23:45,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:45,457 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:45,475 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:45,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:45,658 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-09-25 10:23:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812568267] [2024-09-25 10:23:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:23:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:23:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:23:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:23:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:23:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:23:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:23:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:23:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:23:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:23:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:23:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:23:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:23:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:23:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:23:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:23:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:23:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:23:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:23:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:23:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:23:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:23:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:23:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:23:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:23:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:23:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:23:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:46,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812568267] [2024-09-25 10:23:46,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812568267] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:46,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864911417] [2024-09-25 10:23:46,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:23:46,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:46,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:46,373 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:46,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-25 10:23:46,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-25 10:23:46,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:46,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-25 10:23:46,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:46,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-25 10:23:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864911417] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:47,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-25 10:23:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778553757] [2024-09-25 10:23:47,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:47,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 10:23:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 10:23:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 10:23:47,354 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:47,504 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-25 10:23:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-25 10:23:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-25 10:23:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:47,506 INFO L225 Difference]: With dead ends: 245 [2024-09-25 10:23:47,506 INFO L226 Difference]: Without dead ends: 243 [2024-09-25 10:23:47,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 10:23:47,507 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:47,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-25 10:23:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-25 10:23:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-25 10:23:47,526 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-25 10:23:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:47,526 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-25 10:23:47,527 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 10:23:47,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-25 10:23:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-25 10:23:47,528 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:47,528 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:47,546 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-25 10:23:47,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:47,730 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:47,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-09-25 10:23:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969818307] [2024-09-25 10:23:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 10:23:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:23:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:23:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:23:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:23:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:23:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:23:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:23:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:23:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:23:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:23:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:23:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:23:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:23:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:23:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:23:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:23:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:23:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:23:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:23:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:23:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:23:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:23:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:23:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:23:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:23:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:23:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-25 10:23:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:48,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969818307] [2024-09-25 10:23:48,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969818307] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953903795] [2024-09-25 10:23:48,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:23:48,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:49,000 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:49,002 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-25 10:23:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:49,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-25 10:23:49,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:49,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953903795] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:50,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:50,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-09-25 10:23:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535594909] [2024-09-25 10:23:50,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:50,201 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-25 10:23:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-25 10:23:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-25 10:23:50,202 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:50,471 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-25 10:23:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-25 10:23:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-09-25 10:23:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:50,473 INFO L225 Difference]: With dead ends: 335 [2024-09-25 10:23:50,473 INFO L226 Difference]: Without dead ends: 240 [2024-09-25 10:23:50,474 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-25 10:23:50,474 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:50,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-25 10:23:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-25 10:23:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-25 10:23:50,496 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-25 10:23:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:50,496 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-25 10:23:50,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:50,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-25 10:23:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-25 10:23:50,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:50,498 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:50,515 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-25 10:23:50,699 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-25 10:23:50,699 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:50,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-09-25 10:23:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215495921] [2024-09-25 10:23:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:23:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:23:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:23:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:23:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:23:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:23:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:23:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:23:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:23:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:23:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:23:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:23:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:23:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:23:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:23:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:23:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:23:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:23:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:23:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:23:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:23:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:23:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:23:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:23:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:23:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:23:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:23:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:23:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:51,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215495921] [2024-09-25 10:23:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215495921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261011144] [2024-09-25 10:23:51,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:23:51,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:51,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:51,441 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:51,442 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-25 10:23:51,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:23:51,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:51,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-25 10:23:51,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:51,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-25 10:23:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261011144] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:52,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-25 10:23:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75062697] [2024-09-25 10:23:52,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:52,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-25 10:23:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-25 10:23:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 10:23:52,412 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:52,567 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-25 10:23:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-25 10:23:52,568 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-25 10:23:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:52,569 INFO L225 Difference]: With dead ends: 253 [2024-09-25 10:23:52,569 INFO L226 Difference]: Without dead ends: 251 [2024-09-25 10:23:52,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 10:23:52,570 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:52,570 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-25 10:23:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-25 10:23:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:23:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-25 10:23:52,593 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-25 10:23:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:52,593 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-25 10:23:52,593 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 10:23:52,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-25 10:23:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-25 10:23:52,595 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:52,595 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:52,615 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-25 10:23:52,795 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-25 10:23:52,796 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:52,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-09-25 10:23:52,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:52,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121210309] [2024-09-25 10:23:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:52,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 10:23:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:23:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:23:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:23:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:23:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:23:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:23:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:23:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:23:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:23:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:23:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:23:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:23:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:23:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:23:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:23:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:23:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:23:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:23:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:23:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:23:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:23:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:23:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:23:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:23:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:23:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:23:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:23:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-25 10:23:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121210309] [2024-09-25 10:23:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121210309] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686412727] [2024-09-25 10:23:54,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:23:54,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:54,134 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:54,136 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-25 10:23:54,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-25 10:23:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:54,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-25 10:23:54,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:54,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686412727] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:55,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:55,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-09-25 10:23:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259851269] [2024-09-25 10:23:55,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:55,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-25 10:23:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-25 10:23:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 10:23:55,471 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:55,726 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-25 10:23:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-25 10:23:55,726 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 244 [2024-09-25 10:23:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:55,728 INFO L225 Difference]: With dead ends: 346 [2024-09-25 10:23:55,728 INFO L226 Difference]: Without dead ends: 248 [2024-09-25 10:23:55,729 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 10:23:55,729 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:55,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:23:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-25 10:23:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-25 10:23:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:23:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-25 10:23:55,752 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-25 10:23:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:55,752 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-25 10:23:55,753 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-25 10:23:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-25 10:23:55,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:55,754 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:55,771 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-25 10:23:55,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-25 10:23:55,955 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:55,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-09-25 10:23:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:55,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097768253] [2024-09-25 10:23:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:23:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:23:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:23:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:23:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:23:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:23:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:23:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:23:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:23:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:23:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:23:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:23:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:23:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:23:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:23:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:23:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097768253] [2024-09-25 10:23:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097768253] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577151469] [2024-09-25 10:23:56,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:23:56,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:56,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:56,740 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:56,741 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-25 10:23:56,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:23:56,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:56,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-25 10:23:56,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:56,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:23:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-25 10:23:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577151469] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:23:57,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:23:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-25 10:23:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098050752] [2024-09-25 10:23:57,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:23:57,778 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 10:23:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:23:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 10:23:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 10:23:57,779 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:23:57,949 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-25 10:23:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-25 10:23:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-25 10:23:57,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:23:57,951 INFO L225 Difference]: With dead ends: 261 [2024-09-25 10:23:57,951 INFO L226 Difference]: Without dead ends: 259 [2024-09-25 10:23:57,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-25 10:23:57,952 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:23:57,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:23:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-25 10:23:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-25 10:23:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:23:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-25 10:23:57,972 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-25 10:23:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:23:57,973 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-25 10:23:57,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 10:23:57,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-25 10:23:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-25 10:23:57,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:23:57,974 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:23:57,987 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-25 10:23:58,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:58,174 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:23:58,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:23:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-09-25 10:23:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:23:58,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031461179] [2024-09-25 10:23:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:23:58,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:23:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:23:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 10:23:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:23:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:23:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:23:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:23:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:23:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:23:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:23:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:23:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:23:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:23:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:23:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:23:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:23:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:23:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:23:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:23:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:23:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:23:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:23:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:23:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:23:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:23:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:23:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:23:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:23:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:23:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:23:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:23:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-25 10:23:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:23:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:23:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:23:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031461179] [2024-09-25 10:23:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031461179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:23:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277655841] [2024-09-25 10:23:59,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:23:59,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:23:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:23:59,560 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:23:59,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-25 10:23:59,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-25 10:23:59,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:23:59,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-25 10:23:59,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:23:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:23:59,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:24:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277655841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:00,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-09-25 10:24:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706089609] [2024-09-25 10:24:00,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:00,888 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-25 10:24:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-25 10:24:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-25 10:24:00,889 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:24:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:01,212 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-25 10:24:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-25 10:24:01,213 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-09-25 10:24:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:01,215 INFO L225 Difference]: With dead ends: 357 [2024-09-25 10:24:01,215 INFO L226 Difference]: Without dead ends: 256 [2024-09-25 10:24:01,216 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-25 10:24:01,216 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:01,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-25 10:24:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-25 10:24:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:24:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-25 10:24:01,239 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-25 10:24:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:01,239 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-25 10:24:01,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:24:01,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-25 10:24:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-25 10:24:01,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:01,241 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:01,260 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:01,442 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-25 10:24:01,442 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:01,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-09-25 10:24:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686421907] [2024-09-25 10:24:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:24:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:24:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:24:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:24:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:24:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:24:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:24:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:24:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:24:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:24:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:24:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:24:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:24:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:24:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:24:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:24:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:24:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:24:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:24:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:24:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:24:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:24:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:24:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:24:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:24:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:24:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:24:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:24:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:24:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:24:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:24:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686421907] [2024-09-25 10:24:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686421907] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839202456] [2024-09-25 10:24:02,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:24:02,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:02,321 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:02,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-25 10:24:02,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-25 10:24:02,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:02,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-25 10:24:02,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:24:02,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-25 10:24:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839202456] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:03,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-25 10:24:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168832356] [2024-09-25 10:24:03,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:03,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-25 10:24:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-25 10:24:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-25 10:24:03,408 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:24:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:03,583 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-25 10:24:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-25 10:24:03,583 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-25 10:24:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:03,585 INFO L225 Difference]: With dead ends: 269 [2024-09-25 10:24:03,585 INFO L226 Difference]: Without dead ends: 267 [2024-09-25 10:24:03,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 10:24:03,585 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:03,585 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:24:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-25 10:24:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-25 10:24:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-25 10:24:03,608 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-25 10:24:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:03,608 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-25 10:24:03,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-25 10:24:03,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-25 10:24:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-25 10:24:03,610 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:03,610 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:03,628 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:03,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:03,811 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:03,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-09-25 10:24:03,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:03,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220318072] [2024-09-25 10:24:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:03,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 10:24:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:24:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:24:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:24:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:24:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:24:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:24:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:24:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:24:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:24:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:24:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:24:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:24:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:24:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:24:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:24:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:24:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:24:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:24:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:24:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:24:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:24:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:24:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:24:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:24:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:24:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:24:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:24:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:24:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:24:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-25 10:24:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220318072] [2024-09-25 10:24:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220318072] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415234546] [2024-09-25 10:24:05,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:24:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:05,364 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:05,365 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-25 10:24:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:05,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-25 10:24:05,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:05,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415234546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:06,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:06,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-09-25 10:24:06,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367109531] [2024-09-25 10:24:06,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:06,772 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-25 10:24:06,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-25 10:24:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-25 10:24:06,773 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:24:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:07,087 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-25 10:24:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-25 10:24:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 260 [2024-09-25 10:24:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:07,089 INFO L225 Difference]: With dead ends: 368 [2024-09-25 10:24:07,089 INFO L226 Difference]: Without dead ends: 264 [2024-09-25 10:24:07,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-25 10:24:07,090 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:07,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:24:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-25 10:24:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-25 10:24:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-25 10:24:07,114 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-25 10:24:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:07,115 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-25 10:24:07,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:24:07,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-25 10:24:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-25 10:24:07,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:07,116 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:07,131 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-25 10:24:07,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:07,317 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:07,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-09-25 10:24:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890229567] [2024-09-25 10:24:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:24:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:24:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:24:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:24:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:24:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:24:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:24:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:24:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:24:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:24:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:24:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:24:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:24:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:24:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:24:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:24:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:24:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:24:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:24:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:24:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:24:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:24:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:24:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:24:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:24:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:24:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:24:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:24:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:24:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:24:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:24:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890229567] [2024-09-25 10:24:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890229567] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565812581] [2024-09-25 10:24:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:24:08,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:08,268 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:08,269 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-25 10:24:08,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:24:08,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:08,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-25 10:24:08,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:08,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-25 10:24:09,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565812581] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:09,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:09,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-25 10:24:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076339729] [2024-09-25 10:24:09,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:09,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 10:24:09,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 10:24:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 10:24:09,454 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:24:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:09,629 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-25 10:24:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-25 10:24:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-25 10:24:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:09,631 INFO L225 Difference]: With dead ends: 277 [2024-09-25 10:24:09,631 INFO L226 Difference]: Without dead ends: 275 [2024-09-25 10:24:09,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 10:24:09,632 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:09,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:24:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-25 10:24:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-25 10:24:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-25 10:24:09,657 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-25 10:24:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:09,657 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-25 10:24:09,657 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:24:09,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-25 10:24:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-25 10:24:09,659 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:09,659 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:09,676 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:09,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-25 10:24:09,860 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:09,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-09-25 10:24:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351408213] [2024-09-25 10:24:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:24:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:24:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:24:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:24:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:24:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:24:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:24:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:24:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:24:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:24:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:24:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:24:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:24:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:24:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:24:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:24:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:24:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:24:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:24:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:24:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:24:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:24:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:24:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:24:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:24:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:24:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:24:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:24:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:24:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:24:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:24:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-25 10:24:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351408213] [2024-09-25 10:24:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351408213] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527864458] [2024-09-25 10:24:11,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:24:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:11,571 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:11,571 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-25 10:24:11,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-25 10:24:11,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:11,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-25 10:24:11,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:11,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527864458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:13,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-09-25 10:24:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386908739] [2024-09-25 10:24:13,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:13,066 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-25 10:24:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-25 10:24:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-25 10:24:13,067 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:13,446 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-25 10:24:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-25 10:24:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-09-25 10:24:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:13,448 INFO L225 Difference]: With dead ends: 379 [2024-09-25 10:24:13,448 INFO L226 Difference]: Without dead ends: 272 [2024-09-25 10:24:13,449 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-25 10:24:13,449 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:13,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-25 10:24:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-25 10:24:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-25 10:24:13,476 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-25 10:24:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:13,476 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-25 10:24:13,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:13,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-25 10:24:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-25 10:24:13,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:13,478 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:13,495 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-25 10:24:13,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:13,679 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:13,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-09-25 10:24:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:13,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090107213] [2024-09-25 10:24:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:24:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:24:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:24:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:24:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:24:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:24:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:24:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:24:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:24:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:24:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:24:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:24:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:24:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:24:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:24:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:24:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:24:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:24:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:24:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:24:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:24:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:24:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:24:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:24:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:24:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:24:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:24:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:24:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:24:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:24:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:24:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:24:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:14,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:14,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090107213] [2024-09-25 10:24:14,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090107213] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:14,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835740859] [2024-09-25 10:24:14,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:24:14,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:14,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:14,610 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:14,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-25 10:24:14,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:24:14,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:14,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-25 10:24:14,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:14,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-25 10:24:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835740859] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:15,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-25 10:24:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159717747] [2024-09-25 10:24:15,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:15,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-25 10:24:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-25 10:24:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 10:24:15,781 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:16,019 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-25 10:24:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-25 10:24:16,020 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-25 10:24:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:16,023 INFO L225 Difference]: With dead ends: 285 [2024-09-25 10:24:16,023 INFO L226 Difference]: Without dead ends: 283 [2024-09-25 10:24:16,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 10:24:16,023 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:16,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:24:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-25 10:24:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-25 10:24:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-25 10:24:16,048 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-25 10:24:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:16,048 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-25 10:24:16,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-25 10:24:16,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-25 10:24:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-25 10:24:16,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:16,050 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:16,067 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:16,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:16,251 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:16,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-09-25 10:24:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938332204] [2024-09-25 10:24:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 10:24:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:24:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:24:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:24:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:24:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:24:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:24:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:24:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:24:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:24:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:24:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:24:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:24:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:24:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:24:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:24:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:24:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:24:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:24:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:24:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:24:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:24:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:24:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:24:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:24:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:24:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:24:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:24:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:24:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:24:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:24:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:24:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-25 10:24:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938332204] [2024-09-25 10:24:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938332204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657417033] [2024-09-25 10:24:18,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:24:18,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:18,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:18,104 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:18,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-25 10:24:18,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-25 10:24:18,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:18,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-25 10:24:18,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:18,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657417033] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:19,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:19,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-09-25 10:24:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096644910] [2024-09-25 10:24:19,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:19,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-25 10:24:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-25 10:24:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-25 10:24:19,674 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:20,013 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-25 10:24:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-25 10:24:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 276 [2024-09-25 10:24:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:20,015 INFO L225 Difference]: With dead ends: 390 [2024-09-25 10:24:20,015 INFO L226 Difference]: Without dead ends: 280 [2024-09-25 10:24:20,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-25 10:24:20,016 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:20,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-25 10:24:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-25 10:24:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-25 10:24:20,037 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-25 10:24:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:20,037 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-25 10:24:20,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:20,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-25 10:24:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-25 10:24:20,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:20,038 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:20,055 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-25 10:24:20,239 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-25 10:24:20,239 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:20,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-09-25 10:24:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931272972] [2024-09-25 10:24:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:24:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:24:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:24:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:24:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:24:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:24:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:24:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:24:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:24:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:24:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:24:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:24:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:24:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:24:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:24:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:24:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:24:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:24:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:24:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:24:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:24:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:24:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:24:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:24:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:24:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:24:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:24:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:24:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:24:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:24:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:24:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:24:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:24:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931272972] [2024-09-25 10:24:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931272972] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381011987] [2024-09-25 10:24:21,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:24:21,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:21,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:21,226 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:21,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-25 10:24:21,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-25 10:24:21,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:21,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-25 10:24:21,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:21,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-25 10:24:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381011987] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:22,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:22,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-25 10:24:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899798595] [2024-09-25 10:24:22,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:22,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-25 10:24:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-25 10:24:22,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 10:24:22,532 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:22,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:22,715 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-25 10:24:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-25 10:24:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-25 10:24:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:22,718 INFO L225 Difference]: With dead ends: 293 [2024-09-25 10:24:22,718 INFO L226 Difference]: Without dead ends: 291 [2024-09-25 10:24:22,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 10:24:22,718 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:22,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:24:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-25 10:24:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-25 10:24:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-25 10:24:22,737 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-25 10:24:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:22,737 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-25 10:24:22,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 10:24:22,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-25 10:24:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-25 10:24:22,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:22,739 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:22,756 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-25 10:24:22,939 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-25 10:24:22,940 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:22,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-09-25 10:24:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035418669] [2024-09-25 10:24:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 10:24:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:24:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:24:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:24:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:24:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:24:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:24:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:24:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:24:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:24:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:24:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:24:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:24:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:24:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:24:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:24:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:24:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:24:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:24:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:24:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:24:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:24:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:24:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:24:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:24:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:24:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:24:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:24:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:24:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:24:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:24:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:24:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:24:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-25 10:24:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035418669] [2024-09-25 10:24:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035418669] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848684220] [2024-09-25 10:24:24,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:24:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:24,995 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:24,996 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-25 10:24:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:25,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-25 10:24:25,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:25,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848684220] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:26,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-09-25 10:24:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94246832] [2024-09-25 10:24:26,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:26,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-25 10:24:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-25 10:24:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-25 10:24:26,602 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:26,947 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-25 10:24:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-25 10:24:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 284 [2024-09-25 10:24:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:26,949 INFO L225 Difference]: With dead ends: 401 [2024-09-25 10:24:26,949 INFO L226 Difference]: Without dead ends: 288 [2024-09-25 10:24:26,949 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-25 10:24:26,949 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:26,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-25 10:24:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-25 10:24:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-25 10:24:26,977 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-25 10:24:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:26,977 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-25 10:24:26,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:26,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-25 10:24:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-25 10:24:26,979 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:26,979 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:26,996 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-25 10:24:27,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-25 10:24:27,180 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:27,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-09-25 10:24:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:27,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995069153] [2024-09-25 10:24:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:24:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:24:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:24:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:24:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:24:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:24:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:24:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:24:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:24:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:24:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:24:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:24:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:24:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:24:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:24:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:24:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:24:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:24:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:24:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:24:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:24:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:24:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:24:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:24:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:24:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:24:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-25 10:24:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-25 10:24:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-25 10:24:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-25 10:24:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-25 10:24:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-25 10:24:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-25 10:24:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-25 10:24:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:28,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:28,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995069153] [2024-09-25 10:24:28,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995069153] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:28,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290101213] [2024-09-25 10:24:28,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:24:28,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:28,200 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:28,200 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-25 10:24:28,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:24:28,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:28,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-25 10:24:28,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:28,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-25 10:24:29,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290101213] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:29,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:29,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-25 10:24:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171334680] [2024-09-25 10:24:29,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:29,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-25 10:24:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-25 10:24:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 10:24:29,481 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:29,669 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-25 10:24:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-25 10:24:29,670 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-25 10:24:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:29,672 INFO L225 Difference]: With dead ends: 301 [2024-09-25 10:24:29,672 INFO L226 Difference]: Without dead ends: 299 [2024-09-25 10:24:29,672 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 10:24:29,672 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:29,672 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:24:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-25 10:24:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-25 10:24:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-25 10:24:29,699 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-25 10:24:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:29,700 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-25 10:24:29,700 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-25 10:24:29,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-25 10:24:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-25 10:24:29,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:29,701 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:29,713 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:29,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:29,901 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:29,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-09-25 10:24:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:29,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787187306] [2024-09-25 10:24:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 10:24:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:24:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:24:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:24:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:24:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:24:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:24:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:24:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:24:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:24:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:24:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:24:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:24:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:24:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:24:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:24:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:24:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:24:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:24:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:24:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:24:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:24:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:24:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:24:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:24:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:24:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-25 10:24:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-25 10:24:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-25 10:24:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-25 10:24:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-25 10:24:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-25 10:24:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-25 10:24:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-25 10:24:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-25 10:24:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787187306] [2024-09-25 10:24:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787187306] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404434051] [2024-09-25 10:24:31,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:24:31,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:31,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:31,866 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:31,867 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-25 10:24:31,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-25 10:24:31,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:31,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-25 10:24:31,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:32,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:33,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404434051] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:33,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:33,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-09-25 10:24:33,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798446166] [2024-09-25 10:24:33,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:33,569 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-25 10:24:33,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:33,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-25 10:24:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-25 10:24:33,570 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:33,981 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-25 10:24:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-25 10:24:33,982 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 292 [2024-09-25 10:24:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:33,984 INFO L225 Difference]: With dead ends: 412 [2024-09-25 10:24:33,984 INFO L226 Difference]: Without dead ends: 296 [2024-09-25 10:24:33,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-25 10:24:33,985 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:33,985 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-25 10:24:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-25 10:24:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-25 10:24:34,008 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-25 10:24:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:34,008 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-25 10:24:34,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:34,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-25 10:24:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-25 10:24:34,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:34,009 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:34,022 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:34,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:34,210 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:34,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-09-25 10:24:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5791074] [2024-09-25 10:24:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:24:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:24:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:24:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:24:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:24:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:24:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:24:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:24:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:24:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:24:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:24:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:24:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:24:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:24:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:24:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:24:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:24:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:24:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:24:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:24:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:24:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:24:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:24:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:24:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:24:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:24:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:24:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-25 10:24:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-25 10:24:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-25 10:24:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-25 10:24:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-25 10:24:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-25 10:24:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-25 10:24:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-25 10:24:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5791074] [2024-09-25 10:24:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5791074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854887550] [2024-09-25 10:24:35,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:24:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:35,333 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:35,334 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-25 10:24:35,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:24:35,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:35,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-25 10:24:35,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:35,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-25 10:24:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854887550] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:36,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-25 10:24:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487370707] [2024-09-25 10:24:36,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:36,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-25 10:24:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-25 10:24:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 10:24:36,677 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:36,918 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-25 10:24:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-25 10:24:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-25 10:24:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:36,921 INFO L225 Difference]: With dead ends: 309 [2024-09-25 10:24:36,921 INFO L226 Difference]: Without dead ends: 307 [2024-09-25 10:24:36,921 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 10:24:36,921 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:36,921 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:24:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-25 10:24:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-25 10:24:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-25 10:24:36,952 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-25 10:24:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:36,952 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-25 10:24:36,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 10:24:36,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:36,953 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-25 10:24:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-25 10:24:36,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:36,954 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:36,972 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:37,154 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:37,155 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:37,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-09-25 10:24:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:37,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423046865] [2024-09-25 10:24:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-25 10:24:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:24:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:24:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:24:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:24:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:24:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:24:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:24:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:24:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:24:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:24:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:24:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:24:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:24:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:24:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:24:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:24:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:24:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:24:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:24:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:24:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:24:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:24:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:24:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:24:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:24:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:24:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-25 10:24:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-25 10:24:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-25 10:24:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-25 10:24:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-25 10:24:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-25 10:24:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-25 10:24:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-25 10:24:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-25 10:24:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423046865] [2024-09-25 10:24:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423046865] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371624250] [2024-09-25 10:24:39,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:24:39,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:39,088 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:39,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-25 10:24:39,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-25 10:24:39,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:39,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-25 10:24:39,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:39,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371624250] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:40,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-09-25 10:24:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912325812] [2024-09-25 10:24:40,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:40,886 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-25 10:24:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-25 10:24:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-25 10:24:40,887 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:41,410 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-25 10:24:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-25 10:24:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-09-25 10:24:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:41,412 INFO L225 Difference]: With dead ends: 423 [2024-09-25 10:24:41,412 INFO L226 Difference]: Without dead ends: 304 [2024-09-25 10:24:41,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-25 10:24:41,413 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:41,413 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:24:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-25 10:24:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-25 10:24:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-25 10:24:41,445 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-25 10:24:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:41,445 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-25 10:24:41,445 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:41,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-25 10:24:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-25 10:24:41,447 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:41,447 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:41,465 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-25 10:24:41,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:41,647 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:41,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-09-25 10:24:41,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:41,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871187434] [2024-09-25 10:24:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:24:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:24:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:24:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:24:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:24:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:24:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:24:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:24:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:24:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:24:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:24:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:24:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:24:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:24:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:24:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:24:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:24:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:24:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:24:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:24:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:24:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:24:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:24:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:24:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:24:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:24:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:24:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:24:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-25 10:24:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-25 10:24:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-25 10:24:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-25 10:24:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-25 10:24:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-25 10:24:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-25 10:24:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-25 10:24:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:42,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871187434] [2024-09-25 10:24:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871187434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834800559] [2024-09-25 10:24:42,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:24:42,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:42,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:42,786 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:42,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-25 10:24:42,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-25 10:24:42,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:42,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-25 10:24:42,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:43,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-25 10:24:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834800559] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:44,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-25 10:24:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258920372] [2024-09-25 10:24:44,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:44,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-25 10:24:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-25 10:24:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 10:24:44,198 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:44,412 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-25 10:24:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-25 10:24:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-25 10:24:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:44,415 INFO L225 Difference]: With dead ends: 317 [2024-09-25 10:24:44,415 INFO L226 Difference]: Without dead ends: 315 [2024-09-25 10:24:44,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 10:24:44,415 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:44,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:24:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-25 10:24:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-25 10:24:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:24:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-25 10:24:44,441 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-25 10:24:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:44,442 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-25 10:24:44,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 10:24:44,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-25 10:24:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-25 10:24:44,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:44,445 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:44,460 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:44,645 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:44,645 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:44,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-09-25 10:24:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553093990] [2024-09-25 10:24:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:24:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:24:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:24:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:24:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:24:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:24:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:24:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:24:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:24:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:24:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:24:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:24:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:24:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:24:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:24:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:24:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:24:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:24:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:24:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:24:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:24:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:24:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:24:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:24:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:24:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:24:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:24:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:24:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-25 10:24:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-25 10:24:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-25 10:24:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-25 10:24:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-25 10:24:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-25 10:24:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-25 10:24:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-25 10:24:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-25 10:24:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:46,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553093990] [2024-09-25 10:24:46,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553093990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:46,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204731496] [2024-09-25 10:24:46,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:24:46,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:46,702 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:46,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-25 10:24:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:46,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-25 10:24:46,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:46,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204731496] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:48,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:48,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-09-25 10:24:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011067463] [2024-09-25 10:24:48,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:48,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-25 10:24:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-25 10:24:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-25 10:24:48,576 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:48,948 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-25 10:24:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-25 10:24:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 308 [2024-09-25 10:24:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:48,951 INFO L225 Difference]: With dead ends: 434 [2024-09-25 10:24:48,951 INFO L226 Difference]: Without dead ends: 312 [2024-09-25 10:24:48,952 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-25 10:24:48,952 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:48,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-25 10:24:48,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-25 10:24:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:24:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-25 10:24:48,983 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-25 10:24:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:48,983 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-25 10:24:48,983 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:48,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-25 10:24:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-25 10:24:48,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:48,984 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:49,000 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:49,188 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:49,188 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:49,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-09-25 10:24:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400605727] [2024-09-25 10:24:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:24:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:24:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:24:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:24:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:24:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:24:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:24:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:24:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:24:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:24:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:24:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:24:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:24:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:24:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:24:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:24:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:24:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:24:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:24:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:24:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:24:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:24:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:24:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:24:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:24:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:24:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:24:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:24:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:24:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-25 10:24:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-25 10:24:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-25 10:24:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-25 10:24:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-25 10:24:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-25 10:24:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-25 10:24:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-25 10:24:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:50,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:50,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400605727] [2024-09-25 10:24:50,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400605727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:50,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267912659] [2024-09-25 10:24:50,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:24:50,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:50,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:50,467 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:50,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-25 10:24:50,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:24:50,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:50,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-25 10:24:50,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:50,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-25 10:24:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267912659] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:51,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-25 10:24:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853210927] [2024-09-25 10:24:51,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:51,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-25 10:24:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-25 10:24:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 10:24:51,933 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:52,134 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-25 10:24:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-25 10:24:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-25 10:24:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:52,137 INFO L225 Difference]: With dead ends: 325 [2024-09-25 10:24:52,137 INFO L226 Difference]: Without dead ends: 323 [2024-09-25 10:24:52,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 10:24:52,137 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:52,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:24:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-25 10:24:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-25 10:24:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:24:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-25 10:24:52,158 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-25 10:24:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:52,158 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-25 10:24:52,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-25 10:24:52,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-25 10:24:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-25 10:24:52,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:52,160 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:52,174 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:52,360 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:52,360 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:52,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-09-25 10:24:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680734169] [2024-09-25 10:24:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-25 10:24:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:24:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:24:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:24:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:24:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:24:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:24:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:24:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:24:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:24:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:24:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:24:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:24:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:24:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:24:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:24:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:24:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:24:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:24:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:24:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:24:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:24:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:24:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:24:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:24:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:24:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:24:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:24:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:24:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-25 10:24:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-25 10:24:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-25 10:24:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-25 10:24:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-25 10:24:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-25 10:24:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-25 10:24:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-25 10:24:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-25 10:24:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680734169] [2024-09-25 10:24:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680734169] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123977344] [2024-09-25 10:24:54,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:24:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:54,482 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:54,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-25 10:24:54,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-25 10:24:54,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:54,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-25 10:24:54,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:54,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123977344] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:56,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-09-25 10:24:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573591810] [2024-09-25 10:24:56,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:56,425 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-25 10:24:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-25 10:24:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-25 10:24:56,426 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:24:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:24:56,840 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-25 10:24:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-25 10:24:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-09-25 10:24:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:24:56,843 INFO L225 Difference]: With dead ends: 445 [2024-09-25 10:24:56,843 INFO L226 Difference]: Without dead ends: 320 [2024-09-25 10:24:56,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-25 10:24:56,844 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:24:56,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:24:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-25 10:24:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-25 10:24:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:24:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-25 10:24:56,875 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-25 10:24:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:24:56,875 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-25 10:24:56,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:24:56,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-25 10:24:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-25 10:24:56,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:24:56,877 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:24:56,895 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-09-25 10:24:57,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-25 10:24:57,078 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:24:57,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:24:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-09-25 10:24:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:24:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388437234] [2024-09-25 10:24:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:24:57,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:24:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:24:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:24:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:24:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:24:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:24:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:24:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:24:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:24:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:24:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:24:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:24:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:24:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:24:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:24:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:24:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:24:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:24:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:24:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:24:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:24:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:24:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:24:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:24:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:24:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:24:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:24:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:24:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:24:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:24:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:24:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:24:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-25 10:24:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-25 10:24:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-25 10:24:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-25 10:24:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-25 10:24:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-25 10:24:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-25 10:24:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-25 10:24:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:24:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:24:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388437234] [2024-09-25 10:24:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388437234] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:24:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93230728] [2024-09-25 10:24:58,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:24:58,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:24:58,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:24:58,355 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:24:58,356 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-25 10:24:58,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:24:58,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:24:58,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-25 10:24:58,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:24:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:58,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:24:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-25 10:24:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93230728] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:24:59,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:24:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-25 10:24:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663533497] [2024-09-25 10:24:59,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:24:59,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-25 10:24:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:24:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-25 10:24:59,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 10:24:59,830 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:25:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:00,041 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-25 10:25:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-25 10:25:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-25 10:25:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:00,043 INFO L225 Difference]: With dead ends: 333 [2024-09-25 10:25:00,043 INFO L226 Difference]: Without dead ends: 331 [2024-09-25 10:25:00,043 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-25 10:25:00,044 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:00,044 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-25 10:25:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-25 10:25:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-25 10:25:00,065 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-25 10:25:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:00,065 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-25 10:25:00,065 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-25 10:25:00,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-25 10:25:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-25 10:25:00,067 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:00,067 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:00,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-25 10:25:00,267 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-25 10:25:00,267 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:00,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-09-25 10:25:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009372320] [2024-09-25 10:25:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 10:25:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:25:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:25:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:25:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:25:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:25:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:25:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:25:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:25:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:25:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:25:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:25:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:25:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:25:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:25:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:25:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:25:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:25:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:25:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:25:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:25:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:25:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:25:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:25:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:25:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:25:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:25:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:25:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:25:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:25:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-25 10:25:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-25 10:25:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-25 10:25:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-25 10:25:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-25 10:25:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-25 10:25:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-25 10:25:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-25 10:25:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-25 10:25:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009372320] [2024-09-25 10:25:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009372320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461778754] [2024-09-25 10:25:02,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:25:02,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:02,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:02,532 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:02,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-25 10:25:02,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-25 10:25:02,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:02,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-25 10:25:02,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:02,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:04,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461778754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:04,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-09-25 10:25:04,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108895044] [2024-09-25 10:25:04,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:04,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-25 10:25:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:04,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-25 10:25:04,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-25 10:25:04,587 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:25:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:04,995 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-25 10:25:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-25 10:25:04,995 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 324 [2024-09-25 10:25:04,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:04,997 INFO L225 Difference]: With dead ends: 456 [2024-09-25 10:25:04,997 INFO L226 Difference]: Without dead ends: 328 [2024-09-25 10:25:04,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-25 10:25:04,998 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:04,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:25:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-25 10:25:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-25 10:25:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-25 10:25:05,019 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-25 10:25:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:05,020 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-25 10:25:05,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:25:05,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-25 10:25:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-25 10:25:05,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:05,021 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:05,034 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-25 10:25:05,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:05,221 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-09-25 10:25:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881969788] [2024-09-25 10:25:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:25:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:25:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:25:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:25:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:25:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:25:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:25:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:25:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:25:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:25:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:25:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:25:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:25:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:25:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:25:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:25:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:25:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:25:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:25:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:25:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:25:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:25:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:25:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:25:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:25:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:25:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:25:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:25:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:25:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:25:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:25:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-25 10:25:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-25 10:25:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-25 10:25:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-25 10:25:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-25 10:25:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-25 10:25:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-25 10:25:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-25 10:25:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881969788] [2024-09-25 10:25:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881969788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595698129] [2024-09-25 10:25:06,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:25:06,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:06,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:06,539 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:06,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-25 10:25:06,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-25 10:25:06,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:06,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-25 10:25:06,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:06,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-25 10:25:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595698129] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:08,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-25 10:25:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901983271] [2024-09-25 10:25:08,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:08,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-25 10:25:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-25 10:25:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-25 10:25:08,223 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:25:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:08,437 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-25 10:25:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-25 10:25:08,438 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-25 10:25:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:08,440 INFO L225 Difference]: With dead ends: 341 [2024-09-25 10:25:08,440 INFO L226 Difference]: Without dead ends: 339 [2024-09-25 10:25:08,440 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 10:25:08,440 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:08,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-25 10:25:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-25 10:25:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-25 10:25:08,474 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-25 10:25:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:08,474 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-25 10:25:08,475 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-25 10:25:08,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-25 10:25:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-25 10:25:08,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:08,476 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:08,493 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-09-25 10:25:08,676 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:08,677 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:08,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-09-25 10:25:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597953537] [2024-09-25 10:25:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-25 10:25:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:25:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:25:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:25:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:25:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:25:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:25:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:25:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:25:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:25:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:25:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:25:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:25:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:25:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:25:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:25:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:25:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:25:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:25:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:25:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:25:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:25:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:25:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:25:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:25:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:25:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:25:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:25:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:25:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:25:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:25:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-25 10:25:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-25 10:25:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-25 10:25:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-25 10:25:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-25 10:25:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-25 10:25:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-25 10:25:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-25 10:25:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-25 10:25:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:11,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597953537] [2024-09-25 10:25:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597953537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792232785] [2024-09-25 10:25:11,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:25:11,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:11,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:11,049 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:11,050 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-25 10:25:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:11,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-25 10:25:11,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:11,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792232785] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:13,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:13,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-09-25 10:25:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066881240] [2024-09-25 10:25:13,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:13,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-25 10:25:13,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-25 10:25:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-25 10:25:13,152 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:13,594 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-25 10:25:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-25 10:25:13,594 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-09-25 10:25:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:13,597 INFO L225 Difference]: With dead ends: 467 [2024-09-25 10:25:13,597 INFO L226 Difference]: Without dead ends: 336 [2024-09-25 10:25:13,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-25 10:25:13,599 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:13,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:25:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-25 10:25:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-25 10:25:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-25 10:25:13,633 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-25 10:25:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:13,633 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-25 10:25:13,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:13,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-25 10:25:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-25 10:25:13,635 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:13,635 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:13,652 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-25 10:25:13,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:13,836 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:13,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-09-25 10:25:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:13,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255738656] [2024-09-25 10:25:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:25:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:25:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:25:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:25:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:25:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:25:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:25:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:25:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:25:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:25:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:25:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:25:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:25:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:25:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:25:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:25:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:25:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:25:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:25:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:25:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:25:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:25:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:25:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:25:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:25:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:25:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:25:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:25:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:25:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:25:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:25:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:25:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-25 10:25:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-25 10:25:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-25 10:25:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-25 10:25:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-25 10:25:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-25 10:25:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-25 10:25:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-25 10:25:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255738656] [2024-09-25 10:25:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255738656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973306085] [2024-09-25 10:25:15,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:25:15,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:15,290 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:15,290 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-25 10:25:15,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:25:15,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:15,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-25 10:25:15,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:15,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-25 10:25:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973306085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:16,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-25 10:25:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027289881] [2024-09-25 10:25:16,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:16,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-25 10:25:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-25 10:25:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 10:25:16,919 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:17,178 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-25 10:25:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-25 10:25:17,178 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-25 10:25:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:17,181 INFO L225 Difference]: With dead ends: 349 [2024-09-25 10:25:17,181 INFO L226 Difference]: Without dead ends: 347 [2024-09-25 10:25:17,181 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 10:25:17,182 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:17,182 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-25 10:25:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-25 10:25:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-25 10:25:17,216 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-25 10:25:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:17,217 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-25 10:25:17,217 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-25 10:25:17,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-25 10:25:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-25 10:25:17,229 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:17,229 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:17,248 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-25 10:25:17,430 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-25 10:25:17,430 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:17,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-09-25 10:25:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499394085] [2024-09-25 10:25:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 10:25:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:25:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:25:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:25:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:25:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:25:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:25:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:25:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:25:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:25:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:25:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:25:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:25:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:25:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:25:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:25:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:25:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:25:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:25:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:25:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:25:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:25:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:25:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:25:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:25:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:25:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:25:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:25:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:25:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:25:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:25:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:25:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-25 10:25:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-25 10:25:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-25 10:25:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-25 10:25:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-25 10:25:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-25 10:25:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-25 10:25:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-25 10:25:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-25 10:25:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499394085] [2024-09-25 10:25:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499394085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333468967] [2024-09-25 10:25:19,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:25:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:19,911 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:19,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-25 10:25:20,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-25 10:25:20,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:20,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-25 10:25:20,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:20,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333468967] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:22,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-09-25 10:25:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608974162] [2024-09-25 10:25:22,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:22,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-25 10:25:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-25 10:25:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-25 10:25:22,145 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:22,623 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-25 10:25:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-25 10:25:22,624 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 340 [2024-09-25 10:25:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:22,626 INFO L225 Difference]: With dead ends: 478 [2024-09-25 10:25:22,626 INFO L226 Difference]: Without dead ends: 344 [2024-09-25 10:25:22,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-25 10:25:22,627 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:22,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:25:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-25 10:25:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-25 10:25:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-25 10:25:22,663 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-25 10:25:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:22,663 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-25 10:25:22,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:22,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-25 10:25:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-25 10:25:22,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:22,666 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:22,680 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-25 10:25:22,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:22,866 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:22,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-09-25 10:25:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143437784] [2024-09-25 10:25:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:25:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:25:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:25:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:25:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:25:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:25:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:25:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:25:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:25:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:25:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:25:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:25:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:25:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:25:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:25:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:25:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:25:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:25:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:25:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:25:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:25:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:25:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:25:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:25:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:25:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-25 10:25:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-25 10:25:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-25 10:25:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-25 10:25:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-25 10:25:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-25 10:25:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-25 10:25:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-25 10:25:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-25 10:25:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-25 10:25:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-25 10:25:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-25 10:25:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-25 10:25:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-25 10:25:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-25 10:25:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-25 10:25:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:24,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143437784] [2024-09-25 10:25:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143437784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563878838] [2024-09-25 10:25:24,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:25:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:24,369 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:24,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-25 10:25:24,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:25:24,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:24,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-25 10:25:24,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:24,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-25 10:25:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563878838] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:26,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:26,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-25 10:25:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993046422] [2024-09-25 10:25:26,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:26,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-25 10:25:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-25 10:25:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 10:25:26,046 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:26,281 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-25 10:25:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-25 10:25:26,281 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-25 10:25:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:26,284 INFO L225 Difference]: With dead ends: 357 [2024-09-25 10:25:26,284 INFO L226 Difference]: Without dead ends: 355 [2024-09-25 10:25:26,285 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-25 10:25:26,285 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:26,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-25 10:25:26,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-25 10:25:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-25 10:25:26,321 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-25 10:25:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:26,322 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-25 10:25:26,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-25 10:25:26,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-25 10:25:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-25 10:25:26,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:26,324 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:26,341 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-09-25 10:25:26,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:26,524 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:26,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-09-25 10:25:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187096366] [2024-09-25 10:25:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:25:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 10:25:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 10:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-25 10:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 10:25:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 10:25:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:25:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:25:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:25:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-25 10:25:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-25 10:25:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-25 10:25:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-25 10:25:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:25:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-25 10:25:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-25 10:25:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-25 10:25:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-25 10:25:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-25 10:25:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-25 10:25:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-25 10:25:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-25 10:25:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-25 10:25:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-25 10:25:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-25 10:25:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-25 10:25:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-25 10:25:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-25 10:25:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-25 10:25:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-25 10:25:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-25 10:25:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-25 10:25:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-25 10:25:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-25 10:25:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-25 10:25:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-25 10:25:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-25 10:25:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-25 10:25:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-25 10:25:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-25 10:25:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-25 10:25:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-25 10:25:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:29,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187096366] [2024-09-25 10:25:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187096366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958150954] [2024-09-25 10:25:29,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:25:29,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:29,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:29,204 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-25 10:25:29,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-25 10:25:29,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:29,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-25 10:25:29,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:29,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958150954] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:31,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:31,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-09-25 10:25:31,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015658493] [2024-09-25 10:25:31,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:31,507 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-25 10:25:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-25 10:25:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-25 10:25:31,508 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:32,084 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-25 10:25:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-25 10:25:32,084 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-09-25 10:25:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:32,087 INFO L225 Difference]: With dead ends: 489 [2024-09-25 10:25:32,087 INFO L226 Difference]: Without dead ends: 352 [2024-09-25 10:25:32,088 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-25 10:25:32,089 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:32,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:25:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-25 10:25:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-25 10:25:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-25 10:25:32,124 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-25 10:25:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:32,124 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-25 10:25:32,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:32,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-25 10:25:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-25 10:25:32,126 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:32,127 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:32,144 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-25 10:25:32,327 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:32,327 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:32,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-09-25 10:25:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565691154] [2024-09-25 10:25:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:25:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:25:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:25:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:25:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:25:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:25:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:25:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:25:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:25:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:25:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:25:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:25:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:25:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:25:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:25:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:25:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:25:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:25:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:25:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:25:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:25:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:25:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:25:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:25:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:25:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:25:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-25 10:25:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-25 10:25:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-25 10:25:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-25 10:25:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-25 10:25:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-25 10:25:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-25 10:25:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-25 10:25:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-25 10:25:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-25 10:25:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-25 10:25:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-25 10:25:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-25 10:25:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-25 10:25:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-25 10:25:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-25 10:25:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565691154] [2024-09-25 10:25:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565691154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463403955] [2024-09-25 10:25:33,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:25:33,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:33,844 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:33,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-25 10:25:33,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-25 10:25:33,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:34,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-25 10:25:34,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:34,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-25 10:25:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463403955] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:35,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-25 10:25:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200654997] [2024-09-25 10:25:35,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:35,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-25 10:25:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-25 10:25:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-25 10:25:35,612 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:35,866 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-25 10:25:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-25 10:25:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-25 10:25:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:35,868 INFO L225 Difference]: With dead ends: 365 [2024-09-25 10:25:35,868 INFO L226 Difference]: Without dead ends: 363 [2024-09-25 10:25:35,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 10:25:35,869 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:35,869 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-25 10:25:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-25 10:25:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-25 10:25:35,900 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-25 10:25:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:35,901 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-25 10:25:35,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-25 10:25:35,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-25 10:25:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-25 10:25:35,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:35,902 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:35,918 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-09-25 10:25:36,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:36,103 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:36,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-09-25 10:25:36,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:36,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919424337] [2024-09-25 10:25:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:25:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-25 10:25:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:25:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:25:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 10:25:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-25 10:25:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-25 10:25:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 10:25:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-25 10:25:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:25:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:25:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:25:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-25 10:25:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-25 10:25:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-25 10:25:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:25:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-25 10:25:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-25 10:25:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-25 10:25:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-25 10:25:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-25 10:25:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-25 10:25:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-25 10:25:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-25 10:25:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-25 10:25:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-25 10:25:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-25 10:25:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-25 10:25:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-25 10:25:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-25 10:25:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-25 10:25:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-25 10:25:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-25 10:25:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-25 10:25:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-25 10:25:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-25 10:25:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-25 10:25:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-25 10:25:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-25 10:25:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-25 10:25:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-25 10:25:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-25 10:25:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-25 10:25:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:38,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:38,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919424337] [2024-09-25 10:25:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919424337] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:38,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891982355] [2024-09-25 10:25:38,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:25:38,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:38,837 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:38,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-25 10:25:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:38,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-25 10:25:38,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:39,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891982355] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:41,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:41,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-09-25 10:25:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622913711] [2024-09-25 10:25:41,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:41,201 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-25 10:25:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-25 10:25:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-25 10:25:41,202 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:41,712 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-25 10:25:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-25 10:25:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 356 [2024-09-25 10:25:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:41,714 INFO L225 Difference]: With dead ends: 500 [2024-09-25 10:25:41,714 INFO L226 Difference]: Without dead ends: 360 [2024-09-25 10:25:41,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-25 10:25:41,715 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:41,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:25:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-25 10:25:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-25 10:25:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-25 10:25:41,751 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-25 10:25:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:41,751 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-25 10:25:41,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:41,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-25 10:25:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-25 10:25:41,753 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:41,753 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:41,770 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-25 10:25:41,954 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-25 10:25:41,954 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:41,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-09-25 10:25:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816457679] [2024-09-25 10:25:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:25:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:25:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:25:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:25:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:25:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:25:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:25:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:25:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:25:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:25:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:25:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:25:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:25:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:25:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:25:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:25:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:25:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:25:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:25:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:25:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:25:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:25:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:25:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:25:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:25:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:25:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:25:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-25 10:25:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-25 10:25:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-25 10:25:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-25 10:25:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-25 10:25:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-25 10:25:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-25 10:25:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-25 10:25:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-25 10:25:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-25 10:25:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-25 10:25:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-25 10:25:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-25 10:25:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-25 10:25:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-25 10:25:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-25 10:25:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816457679] [2024-09-25 10:25:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816457679] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986862911] [2024-09-25 10:25:43,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:25:43,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:43,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:43,543 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:43,544 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-25 10:25:43,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:25:43,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:43,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-25 10:25:43,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:43,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-25 10:25:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986862911] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:45,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-25 10:25:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773606929] [2024-09-25 10:25:45,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:45,363 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-25 10:25:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-25 10:25:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 10:25:45,364 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:45,604 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-25 10:25:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-25 10:25:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-25 10:25:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:45,607 INFO L225 Difference]: With dead ends: 373 [2024-09-25 10:25:45,607 INFO L226 Difference]: Without dead ends: 371 [2024-09-25 10:25:45,607 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 10:25:45,607 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:45,607 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-25 10:25:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-25 10:25:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:25:45,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-25 10:25:45,632 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-25 10:25:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:45,633 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-25 10:25:45,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:25:45,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-25 10:25:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-25 10:25:45,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:45,634 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:45,647 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-25 10:25:45,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-25 10:25:45,834 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:45,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-09-25 10:25:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651963276] [2024-09-25 10:25:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-25 10:25:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-25 10:25:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-25 10:25:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-25 10:25:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:25:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:25:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:25:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-25 10:25:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-25 10:25:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-25 10:25:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 10:25:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-25 10:25:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:25:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:25:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-25 10:25:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-25 10:25:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-25 10:25:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-25 10:25:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-25 10:25:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-25 10:25:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-25 10:25:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-25 10:25:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-25 10:25:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-25 10:25:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-25 10:25:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-25 10:25:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-25 10:25:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-25 10:25:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-25 10:25:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-25 10:25:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-25 10:25:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-25 10:25:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-25 10:25:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-25 10:25:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-25 10:25:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-25 10:25:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-25 10:25:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-25 10:25:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-25 10:25:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-25 10:25:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-25 10:25:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-25 10:25:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-25 10:25:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-25 10:25:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:48,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651963276] [2024-09-25 10:25:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651963276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442120494] [2024-09-25 10:25:48,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:25:48,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:48,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:48,659 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:48,659 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-25 10:25:48,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-25 10:25:48,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:48,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-25 10:25:48,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:48,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:51,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442120494] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:51,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:51,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-09-25 10:25:51,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726895037] [2024-09-25 10:25:51,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:51,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-25 10:25:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-25 10:25:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-25 10:25:51,136 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:51,618 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-25 10:25:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-25 10:25:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-09-25 10:25:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:51,621 INFO L225 Difference]: With dead ends: 511 [2024-09-25 10:25:51,621 INFO L226 Difference]: Without dead ends: 368 [2024-09-25 10:25:51,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-25 10:25:51,622 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:51,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:25:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-25 10:25:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-25 10:25:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:25:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-25 10:25:51,652 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-25 10:25:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:51,653 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-25 10:25:51,653 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:51,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-25 10:25:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-25 10:25:51,654 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:51,655 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:51,672 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-25 10:25:51,858 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:51,858 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:51,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-09-25 10:25:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:51,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373060218] [2024-09-25 10:25:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:51,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:25:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:25:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:25:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:25:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:25:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:25:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:25:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:25:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:25:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:25:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:25:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:25:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:25:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:25:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:25:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:25:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:25:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:25:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:25:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:25:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:25:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:25:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:25:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:25:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:25:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:25:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:25:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:25:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-25 10:25:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-25 10:25:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-25 10:25:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-25 10:25:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-25 10:25:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-25 10:25:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-25 10:25:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-25 10:25:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-25 10:25:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-25 10:25:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-25 10:25:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-25 10:25:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-25 10:25:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-25 10:25:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-25 10:25:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-25 10:25:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:53,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:53,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373060218] [2024-09-25 10:25:53,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373060218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:53,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753316338] [2024-09-25 10:25:53,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:25:53,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:53,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:53,502 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:53,503 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-25 10:25:53,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:25:53,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:53,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-25 10:25:53,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:53,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:25:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-25 10:25:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753316338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:25:55,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:25:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-25 10:25:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431500818] [2024-09-25 10:25:55,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:25:55,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-25 10:25:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:25:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-25 10:25:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 10:25:55,356 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:25:55,613 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-25 10:25:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-25 10:25:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-09-25 10:25:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:25:55,616 INFO L225 Difference]: With dead ends: 381 [2024-09-25 10:25:55,616 INFO L226 Difference]: Without dead ends: 379 [2024-09-25 10:25:55,616 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 10:25:55,616 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:25:55,616 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:25:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-25 10:25:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-25 10:25:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:25:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-25 10:25:55,642 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-25 10:25:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:25:55,642 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-25 10:25:55,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-25 10:25:55,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-25 10:25:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-25 10:25:55,644 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:25:55,644 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:25:55,657 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-25 10:25:55,844 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:55,844 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:25:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:25:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-09-25 10:25:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:25:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523556187] [2024-09-25 10:25:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:25:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:25:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:25:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-25 10:25:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-25 10:25:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:25:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 10:25:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 10:25:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-25 10:25:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 10:25:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:25:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:25:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:25:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-25 10:25:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-25 10:25:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-25 10:25:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-25 10:25:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-25 10:25:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-25 10:25:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-25 10:25:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-25 10:25:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-25 10:25:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-25 10:25:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-25 10:25:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-25 10:25:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-25 10:25:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-25 10:25:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-25 10:25:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-25 10:25:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-25 10:25:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-25 10:25:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-25 10:25:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-25 10:25:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-25 10:25:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-25 10:25:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-25 10:25:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-25 10:25:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-25 10:25:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-25 10:25:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-25 10:25:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-25 10:25:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-25 10:25:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-25 10:25:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-25 10:25:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-25 10:25:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-25 10:25:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-25 10:25:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-25 10:25:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:25:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:25:58,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:25:58,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523556187] [2024-09-25 10:25:58,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523556187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:25:58,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357162630] [2024-09-25 10:25:58,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:25:58,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:25:58,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:25:58,779 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:25:58,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-25 10:25:58,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-25 10:25:58,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:25:58,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-25 10:25:58,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:25:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:25:59,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:26:01,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357162630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:01,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:01,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-09-25 10:26:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14475277] [2024-09-25 10:26:01,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:01,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-25 10:26:01,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-25 10:26:01,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-25 10:26:01,343 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:26:02,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:02,013 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-25 10:26:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-25 10:26:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 372 [2024-09-25 10:26:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:02,016 INFO L225 Difference]: With dead ends: 522 [2024-09-25 10:26:02,017 INFO L226 Difference]: Without dead ends: 376 [2024-09-25 10:26:02,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-25 10:26:02,018 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:02,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 10:26:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-25 10:26:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-25 10:26:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:26:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-25 10:26:02,059 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-25 10:26:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:02,060 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-25 10:26:02,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:26:02,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-25 10:26:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-25 10:26:02,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:02,062 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:02,077 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-25 10:26:02,262 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:02,263 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:02,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-09-25 10:26:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195291692] [2024-09-25 10:26:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:26:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:26:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:26:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:26:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:26:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:26:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:26:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:26:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:26:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:26:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:26:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:26:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:26:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:26:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:26:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:26:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:26:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:26:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:26:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:26:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:26:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:26:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:26:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:26:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:26:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:26:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:26:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:26:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:26:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-25 10:26:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-25 10:26:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-25 10:26:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-25 10:26:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-25 10:26:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-25 10:26:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-25 10:26:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-25 10:26:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-25 10:26:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-25 10:26:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-25 10:26:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:03,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-25 10:26:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:04,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-25 10:26:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:04,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-25 10:26:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:04,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-25 10:26:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:04,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-25 10:26:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:26:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195291692] [2024-09-25 10:26:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195291692] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949354600] [2024-09-25 10:26:04,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 10:26:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:04,006 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:04,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-25 10:26:04,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-25 10:26:04,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:26:04,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-25 10:26:04,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:26:04,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-25 10:26:05,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949354600] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:05,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:05,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-25 10:26:05,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478462405] [2024-09-25 10:26:05,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:05,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-25 10:26:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-25 10:26:05,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 10:26:05,979 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:26:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:06,244 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-25 10:26:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-25 10:26:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-25 10:26:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:06,247 INFO L225 Difference]: With dead ends: 389 [2024-09-25 10:26:06,247 INFO L226 Difference]: Without dead ends: 387 [2024-09-25 10:26:06,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-25 10:26:06,247 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:06,247 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:26:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-25 10:26:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-25 10:26:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-25 10:26:06,273 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-25 10:26:06,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:06,274 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-25 10:26:06,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-25 10:26:06,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-25 10:26:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-25 10:26:06,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:06,276 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:06,289 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-25 10:26:06,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:06,477 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:06,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-09-25 10:26:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401411110] [2024-09-25 10:26:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:06,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-25 10:26:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-25 10:26:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 10:26:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:26:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-25 10:26:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:26:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 10:26:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-25 10:26:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-25 10:26:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 10:26:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:26:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:26:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:26:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-25 10:26:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-25 10:26:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-25 10:26:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-25 10:26:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-25 10:26:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-25 10:26:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-25 10:26:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-25 10:26:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-25 10:26:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-25 10:26:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-25 10:26:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-25 10:26:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-25 10:26:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-25 10:26:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-25 10:26:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-25 10:26:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-25 10:26:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-25 10:26:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-25 10:26:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-25 10:26:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-25 10:26:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-25 10:26:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-25 10:26:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-25 10:26:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-25 10:26:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-25 10:26:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-25 10:26:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-25 10:26:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-25 10:26:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-25 10:26:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-25 10:26:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-25 10:26:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-25 10:26:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401411110] [2024-09-25 10:26:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401411110] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211979715] [2024-09-25 10:26:09,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 10:26:09,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:09,558 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:09,559 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-25 10:26:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:09,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-25 10:26:09,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:09,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211979715] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:12,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:12,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-09-25 10:26:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025967696] [2024-09-25 10:26:12,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:12,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-25 10:26:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-25 10:26:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-25 10:26:12,186 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:26:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:12,684 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-25 10:26:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-25 10:26:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-09-25 10:26:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:12,687 INFO L225 Difference]: With dead ends: 533 [2024-09-25 10:26:12,687 INFO L226 Difference]: Without dead ends: 384 [2024-09-25 10:26:12,688 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-25 10:26:12,688 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:12,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:26:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-25 10:26:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-25 10:26:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-25 10:26:12,716 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-25 10:26:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:12,716 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-25 10:26:12,716 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:26:12,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-25 10:26:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-25 10:26:12,717 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:12,717 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:12,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-25 10:26:12,918 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:12,918 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-09-25 10:26:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416421690] [2024-09-25 10:26:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:26:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:26:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:26:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:26:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:26:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:26:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:26:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:26:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:26:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:26:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:26:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:26:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:26:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:26:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:26:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:26:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:26:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:26:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:26:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:26:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:26:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:26:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:26:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:26:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:26:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:26:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:26:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:26:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:26:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:26:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-25 10:26:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-25 10:26:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-25 10:26:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-25 10:26:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-25 10:26:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-25 10:26:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-25 10:26:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-25 10:26:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-25 10:26:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-25 10:26:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-25 10:26:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-25 10:26:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-25 10:26:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-25 10:26:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-25 10:26:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-25 10:26:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416421690] [2024-09-25 10:26:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416421690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428991986] [2024-09-25 10:26:14,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:26:14,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:14,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:14,714 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:14,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-25 10:26:14,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:26:14,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:26:14,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-25 10:26:14,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:15,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-25 10:26:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428991986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:16,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-25 10:26:16,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422908092] [2024-09-25 10:26:16,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:16,739 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-25 10:26:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-25 10:26:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-25 10:26:16,740 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:26:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:16,999 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-25 10:26:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-25 10:26:17,000 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-09-25 10:26:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:17,002 INFO L225 Difference]: With dead ends: 397 [2024-09-25 10:26:17,002 INFO L226 Difference]: Without dead ends: 395 [2024-09-25 10:26:17,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-25 10:26:17,003 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:17,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:26:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-25 10:26:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-25 10:26:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-25 10:26:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-25 10:26:17,036 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-25 10:26:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:17,036 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-25 10:26:17,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-25 10:26:17,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-25 10:26:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-25 10:26:17,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:17,037 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:17,050 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-25 10:26:17,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:17,238 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:17,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-09-25 10:26:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30422835] [2024-09-25 10:26:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:26:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:26:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 10:26:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-25 10:26:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-25 10:26:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:26:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:26:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 10:26:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:26:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-25 10:26:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-25 10:26:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 10:26:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-25 10:26:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:26:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-25 10:26:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-25 10:26:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-25 10:26:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-25 10:26:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-25 10:26:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-25 10:26:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-25 10:26:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-25 10:26:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-25 10:26:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-25 10:26:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-25 10:26:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-25 10:26:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-25 10:26:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-25 10:26:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-25 10:26:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-25 10:26:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-25 10:26:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-25 10:26:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-25 10:26:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-25 10:26:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-25 10:26:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-25 10:26:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-25 10:26:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-25 10:26:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-25 10:26:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-25 10:26:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-25 10:26:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-25 10:26:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-25 10:26:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-25 10:26:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-25 10:26:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-25 10:26:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-25 10:26:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30422835] [2024-09-25 10:26:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30422835] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458961112] [2024-09-25 10:26:20,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:26:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:20,456 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:20,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-25 10:26:20,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-25 10:26:20,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:26:20,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-25 10:26:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:20,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458961112] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:23,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-09-25 10:26:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62067592] [2024-09-25 10:26:23,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:23,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-25 10:26:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-25 10:26:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-25 10:26:23,227 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:23,830 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-25 10:26:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-25 10:26:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 388 [2024-09-25 10:26:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:23,833 INFO L225 Difference]: With dead ends: 544 [2024-09-25 10:26:23,833 INFO L226 Difference]: Without dead ends: 392 [2024-09-25 10:26:23,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-25 10:26:23,834 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:23,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:26:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-25 10:26:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-25 10:26:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-25 10:26:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-25 10:26:23,868 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-25 10:26:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:23,868 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-25 10:26:23,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:23,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-25 10:26:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-25 10:26:23,870 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:23,871 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:23,889 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-09-25 10:26:24,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:24,071 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:24,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-09-25 10:26:24,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:24,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139341005] [2024-09-25 10:26:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:24,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:26:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:26:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:26:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:26:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:26:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:26:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:26:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:26:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:26:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:26:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:26:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:26:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:26:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:26:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:26:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:26:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:26:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:26:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:26:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:26:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:26:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:26:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:26:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:26:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:26:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:26:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:26:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:26:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:26:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:26:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:26:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-25 10:26:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-25 10:26:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-25 10:26:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-25 10:26:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-25 10:26:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-25 10:26:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-25 10:26:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-25 10:26:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-25 10:26:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-25 10:26:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-25 10:26:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-25 10:26:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-25 10:26:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-25 10:26:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-25 10:26:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-25 10:26:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139341005] [2024-09-25 10:26:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139341005] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60803104] [2024-09-25 10:26:26,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:26:26,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:26,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:26,089 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:26,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-25 10:26:26,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:26:26,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:26:26,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-25 10:26:26,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:26,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-25 10:26:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60803104] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:28,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-25 10:26:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841746280] [2024-09-25 10:26:28,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:28,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-25 10:26:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-25 10:26:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-25 10:26:28,179 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:26:28,442 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-25 10:26:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-25 10:26:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-25 10:26:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:26:28,444 INFO L225 Difference]: With dead ends: 405 [2024-09-25 10:26:28,444 INFO L226 Difference]: Without dead ends: 403 [2024-09-25 10:26:28,445 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-25 10:26:28,445 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:26:28,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:26:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-25 10:26:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-25 10:26:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-25 10:26:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-25 10:26:28,474 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-25 10:26:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:26:28,474 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-25 10:26:28,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-25 10:26:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-25 10:26:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-25 10:26:28,477 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:26:28,477 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:26:28,495 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-25 10:26:28,677 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:28,677 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:26:28,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:26:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-09-25 10:26:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:26:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878478112] [2024-09-25 10:26:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:26:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:26:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:26:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 10:26:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 10:26:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:26:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:26:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:26:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 10:26:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-25 10:26:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 10:26:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:26:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:26:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-25 10:26:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:26:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-25 10:26:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-25 10:26:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-25 10:26:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:26:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-25 10:26:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-25 10:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-25 10:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-25 10:26:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-25 10:26:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-25 10:26:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-25 10:26:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-25 10:26:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-25 10:26:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-25 10:26:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-25 10:26:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-25 10:26:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-25 10:26:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-25 10:26:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-25 10:26:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-25 10:26:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-25 10:26:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:31,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-25 10:26:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-25 10:26:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-25 10:26:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-25 10:26:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-25 10:26:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-25 10:26:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-25 10:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-25 10:26:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-25 10:26:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-25 10:26:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-25 10:26:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-25 10:26:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-25 10:26:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-25 10:26:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-25 10:26:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:26:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-25 10:26:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:26:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878478112] [2024-09-25 10:26:32,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878478112] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:26:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278802521] [2024-09-25 10:26:32,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:26:32,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:26:32,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:26:32,013 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:26:32,014 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-25 10:26:32,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-25 10:26:32,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:26:32,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-25 10:26:32,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:26:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-25 10:26:32,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:26:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-25 10:26:34,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278802521] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:26:34,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:26:34,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-09-25 10:26:34,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981612115] [2024-09-25 10:26:34,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:26:34,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-25 10:26:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:26:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-25 10:26:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-25 10:26:34,900 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49)