./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 04d6fb36
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m
[2024-09-15 19:48:00,607 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-15 19:48:00,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-15 19:48:00,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-15 19:48:00,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-15 19:48:00,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-15 19:48:00,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-15 19:48:00,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-15 19:48:00,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-15 19:48:00,719 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-15 19:48:00,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-15 19:48:00,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-15 19:48:00,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-15 19:48:00,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-15 19:48:00,723 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-15 19:48:00,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-15 19:48:00,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-15 19:48:00,723 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-15 19:48:00,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-15 19:48:00,724 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-15 19:48:00,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-15 19:48:00,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-15 19:48:00,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-15 19:48:00,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-15 19:48:00,729 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-15 19:48:00,729 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-15 19:48:00,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-15 19:48:00,730 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-15 19:48:00,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-15 19:48:00,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-15 19:48:00,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-15 19:48:00,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-15 19:48:00,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 19:48:00,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-15 19:48:00,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-15 19:48:00,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-15 19:48:00,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-15 19:48:00,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-15 19:48:00,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-15 19:48:00,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-15 19:48:00,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-15 19:48:00,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-15 19:48:00,735 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
[2024-09-15 19:48:01,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-15 19:48:01,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-15 19:48:01,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-15 19:48:01,071 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-15 19:48:01,071 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-15 19:48:01,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c
[2024-09-15 19:48:02,602 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-15 19:48:02,796 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-15 19:48:02,797 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c
[2024-09-15 19:48:02,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d30c5a594/80345882d1aa443280182b12b2ed4122/FLAG3048ff17c
[2024-09-15 19:48:02,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d30c5a594/80345882d1aa443280182b12b2ed4122
[2024-09-15 19:48:02,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-15 19:48:02,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-15 19:48:02,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-15 19:48:02,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-15 19:48:02,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-15 19:48:02,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:48:02" (1/1) ...
[2024-09-15 19:48:02,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f37d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:02, skipping insertion in model container
[2024-09-15 19:48:02,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:48:02" (1/1) ...
[2024-09-15 19:48:02,856 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-15 19:48:03,010 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494]
[2024-09-15 19:48:03,017 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-15 19:48:03,030 INFO L200 MainTranslator]: Completed pre-run
[2024-09-15 19:48:03,042 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494]
[2024-09-15 19:48:03,042 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-15 19:48:03,065 INFO L204 MainTranslator]: Completed translation
[2024-09-15 19:48:03,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03 WrapperNode
[2024-09-15 19:48:03,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-15 19:48:03,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-15 19:48:03,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-15 19:48:03,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-15 19:48:03,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,086 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-15 19:48:03,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-15 19:48:03,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-15 19:48:03,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-15 19:48:03,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-15 19:48:03,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,115 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].
[2024-09-15 19:48:03,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-15 19:48:03,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-15 19:48:03,128 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-15 19:48:03,128 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-15 19:48:03,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (1/1) ...
[2024-09-15 19:48:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 19:48:03,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:03,160 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)
[2024-09-15 19:48:03,166 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
[2024-09-15 19:48:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-15 19:48:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-15 19:48:03,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-15 19:48:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-15 19:48:03,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-15 19:48:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure sum
[2024-09-15 19:48:03,207 INFO L138 BoogieDeclarations]: Found implementation of procedure sum
[2024-09-15 19:48:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-15 19:48:03,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-15 19:48:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-15 19:48:03,274 INFO L242 CfgBuilder]: Building ICFG
[2024-09-15 19:48:03,276 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-15 19:48:03,405 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live.
[2024-09-15 19:48:03,405 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-15 19:48:03,431 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-15 19:48:03,432 INFO L318 CfgBuilder]: Removed 0 assume(true) statements.
[2024-09-15 19:48:03,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:48:03 BoogieIcfgContainer
[2024-09-15 19:48:03,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-15 19:48:03,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-15 19:48:03,436 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-15 19:48:03,439 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-15 19:48:03,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:48:02" (1/3) ...
[2024-09-15 19:48:03,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a24993e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:48:03, skipping insertion in model container
[2024-09-15 19:48:03,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:48:03" (2/3) ...
[2024-09-15 19:48:03,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a24993e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:48:03, skipping insertion in model container
[2024-09-15 19:48:03,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:48:03" (3/3) ...
[2024-09-15 19:48:03,442 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c
[2024-09-15 19:48:03,457 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-15 19:48:03,457 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-15 19:48:03,533 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-15 19:48:03,539 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;@53ac0ac0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-15 19:48:03,540 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-15 19:48:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-09-15 19:48:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-09-15 19:48:03,551 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:03,552 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:03,553 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:03,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times
[2024-09-15 19:48:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237867711]
[2024-09-15 19:48:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:03,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:03,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 19:48:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237867711]
[2024-09-15 19:48:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237867711] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 19:48:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-15 19:48:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-09-15 19:48:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828020352]
[2024-09-15 19:48:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 19:48:03,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-15 19:48:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-15 19:48:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-15 19:48:03,933 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 19:48:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:04,006 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions.
[2024-09-15 19:48:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-15 19:48:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13
[2024-09-15 19:48:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:04,016 INFO L225 Difference]: With dead ends: 30
[2024-09-15 19:48:04,016 INFO L226 Difference]: Without dead ends: 18
[2024-09-15 19:48:04,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-15 19:48:04,025 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:04,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2024-09-15 19:48:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2024-09-15 19:48:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2024-09-15 19:48:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2024-09-15 19:48:04,068 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13
[2024-09-15 19:48:04,068 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:04,068 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2024-09-15 19:48:04,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 19:48:04,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2024-09-15 19:48:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-09-15 19:48:04,071 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:04,071 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:04,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-15 19:48:04,072 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:04,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times
[2024-09-15 19:48:04,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:04,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625234138]
[2024-09-15 19:48:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:04,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:04,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:04,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:04,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-09-15 19:48:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625234138]
[2024-09-15 19:48:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625234138] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026836143]
[2024-09-15 19:48:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:04,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:04,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:04,308 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)
[2024-09-15 19:48:04,309 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-15 19:48:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:04,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:04,369 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-09-15 19:48:04,445 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-09-15 19:48:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026836143] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:04,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10
[2024-09-15 19:48:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187929822]
[2024-09-15 19:48:04,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:04,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-09-15 19:48:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-09-15 19:48:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-09-15 19:48:04,653 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-15 19:48:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:04,739 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2024-09-15 19:48:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-09-15 19:48:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19
[2024-09-15 19:48:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:04,741 INFO L225 Difference]: With dead ends: 25
[2024-09-15 19:48:04,741 INFO L226 Difference]: Without dead ends: 21
[2024-09-15 19:48:04,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2024-09-15 19:48:04,742 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:04,743 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-09-15 19:48:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2024-09-15 19:48:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5)
[2024-09-15 19:48:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-09-15 19:48:04,749 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19
[2024-09-15 19:48:04,749 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:04,749 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-09-15 19:48:04,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-15 19:48:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-09-15 19:48:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-09-15 19:48:04,755 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:04,755 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:04,769 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-15 19:48:04,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:04,960 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:04,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times
[2024-09-15 19:48:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:04,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990319094]
[2024-09-15 19:48:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-09-15 19:48:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990319094]
[2024-09-15 19:48:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990319094] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087844887]
[2024-09-15 19:48:05,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 19:48:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:05,224 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)
[2024-09-15 19:48:05,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-15 19:48:05,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-15 19:48:05,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:05,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:05,276 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-09-15 19:48:05,328 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-09-15 19:48:05,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087844887] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:05,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:05,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12
[2024-09-15 19:48:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855628483]
[2024-09-15 19:48:05,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:05,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-09-15 19:48:05,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-09-15 19:48:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-09-15 19:48:05,697 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9)
[2024-09-15 19:48:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:05,764 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions.
[2024-09-15 19:48:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-09-15 19:48:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25
[2024-09-15 19:48:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:05,766 INFO L225 Difference]: With dead ends: 28
[2024-09-15 19:48:05,766 INFO L226 Difference]: Without dead ends: 24
[2024-09-15 19:48:05,766 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2024-09-15 19:48:05,767 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:05,767 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 19:48:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-09-15 19:48:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-09-15 19:48:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2024-09-15 19:48:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2024-09-15 19:48:05,778 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25
[2024-09-15 19:48:05,778 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:05,779 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2024-09-15 19:48:05,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9)
[2024-09-15 19:48:05,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2024-09-15 19:48:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-09-15 19:48:05,780 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:05,780 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:05,795 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-09-15 19:48:05,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:05,985 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times
[2024-09-15 19:48:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520029418]
[2024-09-15 19:48:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-09-15 19:48:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520029418]
[2024-09-15 19:48:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520029418] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283978881]
[2024-09-15 19:48:06,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-09-15 19:48:06,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:06,251 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)
[2024-09-15 19:48:06,252 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-09-15 19:48:06,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-09-15 19:48:06,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:06,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:06,305 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-09-15 19:48:06,350 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-09-15 19:48:06,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283978881] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:06,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:06,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14
[2024-09-15 19:48:06,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875597669]
[2024-09-15 19:48:06,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:06,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-09-15 19:48:06,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:06,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-09-15 19:48:06,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182
[2024-09-15 19:48:06,870 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12)
[2024-09-15 19:48:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:06,961 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2024-09-15 19:48:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-09-15 19:48:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31
[2024-09-15 19:48:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:06,963 INFO L225 Difference]: With dead ends: 31
[2024-09-15 19:48:06,963 INFO L226 Difference]: Without dead ends: 27
[2024-09-15 19:48:06,964 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272
[2024-09-15 19:48:06,965 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:06,965 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 19:48:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-09-15 19:48:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2024-09-15 19:48:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7)
[2024-09-15 19:48:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2024-09-15 19:48:06,975 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31
[2024-09-15 19:48:06,976 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:06,976 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2024-09-15 19:48:06,978 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12)
[2024-09-15 19:48:06,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2024-09-15 19:48:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-09-15 19:48:06,979 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:06,980 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:06,993 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-09-15 19:48:07,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:07,184 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:07,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times
[2024-09-15 19:48:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925731616]
[2024-09-15 19:48:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-09-15 19:48:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925731616]
[2024-09-15 19:48:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925731616] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892484292]
[2024-09-15 19:48:07,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-09-15 19:48:07,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:07,486 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)
[2024-09-15 19:48:07,487 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-09-15 19:48:07,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-09-15 19:48:07,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:07,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:07,541 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-09-15 19:48:07,595 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-09-15 19:48:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892484292] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:08,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16
[2024-09-15 19:48:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340137743]
[2024-09-15 19:48:08,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:08,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-09-15 19:48:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-09-15 19:48:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240
[2024-09-15 19:48:08,340 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15)
[2024-09-15 19:48:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:08,413 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions.
[2024-09-15 19:48:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-09-15 19:48:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37
[2024-09-15 19:48:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:08,415 INFO L225 Difference]: With dead ends: 34
[2024-09-15 19:48:08,415 INFO L226 Difference]: Without dead ends: 30
[2024-09-15 19:48:08,416 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380
[2024-09-15 19:48:08,417 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:08,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 19:48:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-09-15 19:48:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-09-15 19:48:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8)
[2024-09-15 19:48:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2024-09-15 19:48:08,429 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37
[2024-09-15 19:48:08,430 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:08,430 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2024-09-15 19:48:08,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15)
[2024-09-15 19:48:08,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2024-09-15 19:48:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-09-15 19:48:08,431 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:08,431 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:08,450 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-09-15 19:48:08,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:08,632 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:08,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times
[2024-09-15 19:48:08,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:08,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856837971]
[2024-09-15 19:48:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2024-09-15 19:48:08,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856837971]
[2024-09-15 19:48:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856837971] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867951116]
[2024-09-15 19:48:08,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-09-15 19:48:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:08,903 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)
[2024-09-15 19:48:08,905 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-09-15 19:48:08,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2024-09-15 19:48:08,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:08,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:08,964 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2024-09-15 19:48:09,032 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-09-15 19:48:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867951116] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:10,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18
[2024-09-15 19:48:10,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461371281]
[2024-09-15 19:48:10,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:10,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-09-15 19:48:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-09-15 19:48:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2024-09-15 19:48:10,044 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18)
[2024-09-15 19:48:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:10,132 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions.
[2024-09-15 19:48:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-09-15 19:48:10,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43
[2024-09-15 19:48:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:10,134 INFO L225 Difference]: With dead ends: 37
[2024-09-15 19:48:10,134 INFO L226 Difference]: Without dead ends: 33
[2024-09-15 19:48:10,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506
[2024-09-15 19:48:10,135 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:10,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-09-15 19:48:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2024-09-15 19:48:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9)
[2024-09-15 19:48:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2024-09-15 19:48:10,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43
[2024-09-15 19:48:10,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:10,142 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2024-09-15 19:48:10,142 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18)
[2024-09-15 19:48:10,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2024-09-15 19:48:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-09-15 19:48:10,143 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:10,144 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:10,160 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-09-15 19:48:10,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-09-15 19:48:10,345 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:10,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times
[2024-09-15 19:48:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:10,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483687642]
[2024-09-15 19:48:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-09-15 19:48:10,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483687642]
[2024-09-15 19:48:10,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483687642] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:10,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158114705]
[2024-09-15 19:48:10,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-09-15 19:48:10,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:10,716 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)
[2024-09-15 19:48:10,718 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-09-15 19:48:10,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2024-09-15 19:48:10,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:10,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:10,789 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-09-15 19:48:10,840 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-09-15 19:48:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158114705] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:12,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20
[2024-09-15 19:48:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677658531]
[2024-09-15 19:48:12,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:12,163 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-09-15 19:48:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-09-15 19:48:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380
[2024-09-15 19:48:12,165 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21)
[2024-09-15 19:48:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:12,271 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions.
[2024-09-15 19:48:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-09-15 19:48:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49
[2024-09-15 19:48:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:12,272 INFO L225 Difference]: With dead ends: 40
[2024-09-15 19:48:12,272 INFO L226 Difference]: Without dead ends: 36
[2024-09-15 19:48:12,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650
[2024-09-15 19:48:12,273 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:12,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-09-15 19:48:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2024-09-15 19:48:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10)
[2024-09-15 19:48:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2024-09-15 19:48:12,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49
[2024-09-15 19:48:12,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:12,282 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2024-09-15 19:48:12,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21)
[2024-09-15 19:48:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2024-09-15 19:48:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-09-15 19:48:12,284 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:12,284 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:12,305 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-09-15 19:48:12,491 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:12,492 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times
[2024-09-15 19:48:12,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:12,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282509008]
[2024-09-15 19:48:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2024-09-15 19:48:12,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282509008]
[2024-09-15 19:48:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282509008] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815707636]
[2024-09-15 19:48:12,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-09-15 19:48:12,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:12,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:12,885 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)
[2024-09-15 19:48:12,887 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-09-15 19:48:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:12,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:12,980 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2024-09-15 19:48:13,046 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-09-15 19:48:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815707636] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:14,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:14,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22
[2024-09-15 19:48:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801120848]
[2024-09-15 19:48:14,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:14,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-09-15 19:48:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-09-15 19:48:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462
[2024-09-15 19:48:14,807 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24)
[2024-09-15 19:48:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:14,903 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions.
[2024-09-15 19:48:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-09-15 19:48:14,903 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55
[2024-09-15 19:48:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:14,904 INFO L225 Difference]: With dead ends: 43
[2024-09-15 19:48:14,904 INFO L226 Difference]: Without dead ends: 39
[2024-09-15 19:48:14,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812
[2024-09-15 19:48:14,906 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:14,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-09-15 19:48:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-09-15 19:48:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11)
[2024-09-15 19:48:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2024-09-15 19:48:14,912 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55
[2024-09-15 19:48:14,912 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:14,912 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2024-09-15 19:48:14,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24)
[2024-09-15 19:48:14,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2024-09-15 19:48:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-09-15 19:48:14,914 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:14,914 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:14,932 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-09-15 19:48:15,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:15,115 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times
[2024-09-15 19:48:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996440944]
[2024-09-15 19:48:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-09-15 19:48:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996440944]
[2024-09-15 19:48:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996440944] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457571781]
[2024-09-15 19:48:15,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 19:48:15,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:15,619 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)
[2024-09-15 19:48:15,621 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-09-15 19:48:15,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-15 19:48:15,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:15,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:15,749 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2024-09-15 19:48:15,823 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2024-09-15 19:48:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457571781] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:18,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:18,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24
[2024-09-15 19:48:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804685451]
[2024-09-15 19:48:18,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:18,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-09-15 19:48:18,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:18,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-09-15 19:48:18,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552
[2024-09-15 19:48:18,206 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27)
[2024-09-15 19:48:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:18,351 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions.
[2024-09-15 19:48:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-09-15 19:48:18,352 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61
[2024-09-15 19:48:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:18,353 INFO L225 Difference]: With dead ends: 46
[2024-09-15 19:48:18,353 INFO L226 Difference]: Without dead ends: 42
[2024-09-15 19:48:18,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992
[2024-09-15 19:48:18,354 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:18,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-09-15 19:48:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2024-09-15 19:48:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12)
[2024-09-15 19:48:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions.
[2024-09-15 19:48:18,367 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61
[2024-09-15 19:48:18,368 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:18,368 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions.
[2024-09-15 19:48:18,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27)
[2024-09-15 19:48:18,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions.
[2024-09-15 19:48:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-09-15 19:48:18,369 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:18,369 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:18,386 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-09-15 19:48:18,570 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:18,570 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:18,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times
[2024-09-15 19:48:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207687162]
[2024-09-15 19:48:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:18,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2024-09-15 19:48:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207687162]
[2024-09-15 19:48:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207687162] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642847111]
[2024-09-15 19:48:19,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-09-15 19:48:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:19,143 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)
[2024-09-15 19:48:19,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-09-15 19:48:19,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2024-09-15 19:48:19,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:19,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:19,314 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2024-09-15 19:48:19,382 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-09-15 19:48:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642847111] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:22,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:22,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26
[2024-09-15 19:48:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674108605]
[2024-09-15 19:48:22,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:22,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-09-15 19:48:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:22,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-09-15 19:48:22,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650
[2024-09-15 19:48:22,526 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30)
[2024-09-15 19:48:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:22,661 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions.
[2024-09-15 19:48:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-09-15 19:48:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67
[2024-09-15 19:48:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:22,663 INFO L225 Difference]: With dead ends: 49
[2024-09-15 19:48:22,667 INFO L226 Difference]: Without dead ends: 45
[2024-09-15 19:48:22,668 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190
[2024-09-15 19:48:22,669 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:22,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2024-09-15 19:48:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2024-09-15 19:48:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13)
[2024-09-15 19:48:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2024-09-15 19:48:22,680 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67
[2024-09-15 19:48:22,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:22,681 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2024-09-15 19:48:22,681 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30)
[2024-09-15 19:48:22,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2024-09-15 19:48:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2024-09-15 19:48:22,686 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:22,686 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:22,706 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-09-15 19:48:22,886 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-09-15 19:48:22,887 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:22,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times
[2024-09-15 19:48:22,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389913243]
[2024-09-15 19:48:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:22,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:22,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2024-09-15 19:48:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389913243]
[2024-09-15 19:48:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389913243] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298076438]
[2024-09-15 19:48:23,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-09-15 19:48:23,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:23,504 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)
[2024-09-15 19:48:23,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-09-15 19:48:23,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-09-15 19:48:23,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:23,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:23,729 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2024-09-15 19:48:23,806 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-09-15 19:48:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298076438] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:28,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28
[2024-09-15 19:48:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101848314]
[2024-09-15 19:48:28,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:28,162 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2024-09-15 19:48:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2024-09-15 19:48:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756
[2024-09-15 19:48:28,164 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33)
[2024-09-15 19:48:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:28,318 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions.
[2024-09-15 19:48:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-09-15 19:48:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73
[2024-09-15 19:48:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:28,320 INFO L225 Difference]: With dead ends: 52
[2024-09-15 19:48:28,320 INFO L226 Difference]: Without dead ends: 48
[2024-09-15 19:48:28,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406
[2024-09-15 19:48:28,321 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:28,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2024-09-15 19:48:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2024-09-15 19:48:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14)
[2024-09-15 19:48:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions.
[2024-09-15 19:48:28,328 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73
[2024-09-15 19:48:28,328 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:28,328 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions.
[2024-09-15 19:48:28,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33)
[2024-09-15 19:48:28,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions.
[2024-09-15 19:48:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2024-09-15 19:48:28,330 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:28,330 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:28,347 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-09-15 19:48:28,530 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-09-15 19:48:28,531 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:28,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times
[2024-09-15 19:48:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982030392]
[2024-09-15 19:48:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:28,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2024-09-15 19:48:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982030392]
[2024-09-15 19:48:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982030392] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920479254]
[2024-09-15 19:48:29,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-09-15 19:48:29,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:29,239 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)
[2024-09-15 19:48:29,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-09-15 19:48:29,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s)
[2024-09-15 19:48:29,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:29,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:29,500 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2024-09-15 19:48:29,561 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-09-15 19:48:35,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920479254] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:35,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:35,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30
[2024-09-15 19:48:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210591023]
[2024-09-15 19:48:35,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:35,116 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2024-09-15 19:48:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2024-09-15 19:48:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870
[2024-09-15 19:48:35,117 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36)
[2024-09-15 19:48:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:35,248 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2024-09-15 19:48:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-09-15 19:48:35,248 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79
[2024-09-15 19:48:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:35,249 INFO L225 Difference]: With dead ends: 55
[2024-09-15 19:48:35,249 INFO L226 Difference]: Without dead ends: 51
[2024-09-15 19:48:35,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640
[2024-09-15 19:48:35,251 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:35,251 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2024-09-15 19:48:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2024-09-15 19:48:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15)
[2024-09-15 19:48:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions.
[2024-09-15 19:48:35,257 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79
[2024-09-15 19:48:35,257 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:35,258 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions.
[2024-09-15 19:48:35,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36)
[2024-09-15 19:48:35,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions.
[2024-09-15 19:48:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2024-09-15 19:48:35,259 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:35,259 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:35,276 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-09-15 19:48:35,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:35,464 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:35,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times
[2024-09-15 19:48:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128009834]
[2024-09-15 19:48:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:35,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2024-09-15 19:48:36,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:36,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128009834]
[2024-09-15 19:48:36,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128009834] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:36,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102370951]
[2024-09-15 19:48:36,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-09-15 19:48:36,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:36,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:36,269 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)
[2024-09-15 19:48:36,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-09-15 19:48:36,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s)
[2024-09-15 19:48:36,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:36,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:36,635 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2024-09-15 19:48:36,719 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2024-09-15 19:48:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102370951] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:43,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32
[2024-09-15 19:48:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588821921]
[2024-09-15 19:48:43,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:43,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2024-09-15 19:48:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:43,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2024-09-15 19:48:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992
[2024-09-15 19:48:43,893 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39)
[2024-09-15 19:48:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:44,089 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions.
[2024-09-15 19:48:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-09-15 19:48:44,089 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85
[2024-09-15 19:48:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:44,090 INFO L225 Difference]: With dead ends: 58
[2024-09-15 19:48:44,090 INFO L226 Difference]: Without dead ends: 54
[2024-09-15 19:48:44,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892
[2024-09-15 19:48:44,091 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:44,092 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-09-15 19:48:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2024-09-15 19:48:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16)
[2024-09-15 19:48:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions.
[2024-09-15 19:48:44,098 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85
[2024-09-15 19:48:44,098 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:44,098 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions.
[2024-09-15 19:48:44,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39)
[2024-09-15 19:48:44,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions.
[2024-09-15 19:48:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2024-09-15 19:48:44,100 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:44,100 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:44,114 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-09-15 19:48:44,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-09-15 19:48:44,301 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:44,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times
[2024-09-15 19:48:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:44,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865310231]
[2024-09-15 19:48:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:44,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2024-09-15 19:48:45,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865310231]
[2024-09-15 19:48:45,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865310231] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:45,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114419711]
[2024-09-15 19:48:45,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-09-15 19:48:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:45,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:45,245 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)
[2024-09-15 19:48:45,246 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-09-15 19:48:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:45,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:45,672 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2024-09-15 19:48:45,745 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:48:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2024-09-15 19:48:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114419711] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:48:54,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:48:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34
[2024-09-15 19:48:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39999000]
[2024-09-15 19:48:54,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:48:54,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2024-09-15 19:48:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:48:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2024-09-15 19:48:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122
[2024-09-15 19:48:54,913 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42)
[2024-09-15 19:48:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:48:55,076 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions.
[2024-09-15 19:48:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-09-15 19:48:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91
[2024-09-15 19:48:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:48:55,077 INFO L225 Difference]: With dead ends: 61
[2024-09-15 19:48:55,077 INFO L226 Difference]: Without dead ends: 57
[2024-09-15 19:48:55,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162
[2024-09-15 19:48:55,079 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:48:55,079 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:48:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-09-15 19:48:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2024-09-15 19:48:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17)
[2024-09-15 19:48:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions.
[2024-09-15 19:48:55,085 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91
[2024-09-15 19:48:55,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:48:55,086 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions.
[2024-09-15 19:48:55,086 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42)
[2024-09-15 19:48:55,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions.
[2024-09-15 19:48:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-09-15 19:48:55,087 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:48:55,087 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:48:55,104 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-09-15 19:48:55,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-09-15 19:48:55,288 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:48:55,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:48:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times
[2024-09-15 19:48:55,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:48:55,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050456272]
[2024-09-15 19:48:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:48:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:48:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:48:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:48:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:55,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:48:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:48:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2024-09-15 19:48:56,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:48:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050456272]
[2024-09-15 19:48:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050456272] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:48:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647573582]
[2024-09-15 19:48:56,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 19:48:56,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:48:56,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:48:56,443 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)
[2024-09-15 19:48:56,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-09-15 19:48:57,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-15 19:48:57,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:48:57,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-09-15 19:48:57,005 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:48:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2024-09-15 19:48:57,080 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:49:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2024-09-15 19:49:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647573582] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:49:08,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:49:08,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 36
[2024-09-15 19:49:08,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132426818]
[2024-09-15 19:49:08,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:49:08,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-09-15 19:49:08,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:49:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-09-15 19:49:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260
[2024-09-15 19:49:08,263 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45)
[2024-09-15 19:49:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:49:08,454 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions.
[2024-09-15 19:49:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-09-15 19:49:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) Word has length 97
[2024-09-15 19:49:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:49:08,455 INFO L225 Difference]: With dead ends: 64
[2024-09-15 19:49:08,455 INFO L226 Difference]: Without dead ends: 60
[2024-09-15 19:49:08,457 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450
[2024-09-15 19:49:08,458 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:49:08,458 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 148 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:49:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2024-09-15 19:49:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2024-09-15 19:49:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18)
[2024-09-15 19:49:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions.
[2024-09-15 19:49:08,465 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97
[2024-09-15 19:49:08,465 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:49:08,465 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions.
[2024-09-15 19:49:08,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45)
[2024-09-15 19:49:08,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions.
[2024-09-15 19:49:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2024-09-15 19:49:08,466 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:49:08,466 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:49:08,488 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-09-15 19:49:08,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-09-15 19:49:08,667 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:49:08,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times
[2024-09-15 19:49:08,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:49:08,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131516933]
[2024-09-15 19:49:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:49:08,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:49:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:08,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:49:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:08,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:49:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:08,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked.
[2024-09-15 19:49:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:49:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131516933]
[2024-09-15 19:49:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131516933] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:49:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324908585]
[2024-09-15 19:49:09,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-09-15 19:49:09,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:49:09,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:49:09,794 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)
[2024-09-15 19:49:09,796 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-09-15 19:49:10,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s)
[2024-09-15 19:49:10,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:49:10,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-09-15 19:49:10,469 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:49:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked.
[2024-09-15 19:49:10,567 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:49:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2024-09-15 19:49:24,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324908585] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:49:24,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:49:24,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 38
[2024-09-15 19:49:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753616212]
[2024-09-15 19:49:24,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:49:24,383 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2024-09-15 19:49:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:49:24,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2024-09-15 19:49:24,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406
[2024-09-15 19:49:24,386 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48)
[2024-09-15 19:49:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:49:24,592 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions.
[2024-09-15 19:49:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-09-15 19:49:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) Word has length 103
[2024-09-15 19:49:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:49:24,593 INFO L225 Difference]: With dead ends: 67
[2024-09-15 19:49:24,593 INFO L226 Difference]: Without dead ends: 63
[2024-09-15 19:49:24,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 206 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=888, Invalid=1868, Unknown=0, NotChecked=0, Total=2756
[2024-09-15 19:49:24,594 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:49:24,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 150 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:49:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-09-15 19:49:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2024-09-15 19:49:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19)
[2024-09-15 19:49:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions.
[2024-09-15 19:49:24,601 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103
[2024-09-15 19:49:24,602 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:49:24,602 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions.
[2024-09-15 19:49:24,602 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48)
[2024-09-15 19:49:24,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions.
[2024-09-15 19:49:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2024-09-15 19:49:24,603 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:49:24,603 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:49:24,621 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-09-15 19:49:24,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-09-15 19:49:24,803 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:49:24,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash -101860324, now seen corresponding path program 16 times
[2024-09-15 19:49:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:49:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230615153]
[2024-09-15 19:49:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:49:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:49:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:24,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:49:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:24,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:49:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:25,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:26,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-09-15 19:49:26,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:49:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230615153]
[2024-09-15 19:49:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230615153] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:49:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374774824]
[2024-09-15 19:49:26,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-09-15 19:49:26,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:49:26,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:49:26,043 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)
[2024-09-15 19:49:26,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-09-15 19:49:26,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-09-15 19:49:26,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:49:26,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-09-15 19:49:26,907 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:49:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-09-15 19:49:26,988 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:49:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2024-09-15 19:49:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374774824] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:49:43,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:49:43,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 37] total 40
[2024-09-15 19:49:43,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516883630]
[2024-09-15 19:49:43,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:49:43,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2024-09-15 19:49:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:49:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2024-09-15 19:49:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560
[2024-09-15 19:49:43,907 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51)
[2024-09-15 19:49:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:49:44,086 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions.
[2024-09-15 19:49:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-09-15 19:49:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) Word has length 109
[2024-09-15 19:49:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:49:44,087 INFO L225 Difference]: With dead ends: 70
[2024-09-15 19:49:44,087 INFO L226 Difference]: Without dead ends: 66
[2024-09-15 19:49:44,088 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 218 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=994, Invalid=2086, Unknown=0, NotChecked=0, Total=3080
[2024-09-15 19:49:44,089 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:49:44,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 185 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:49:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2024-09-15 19:49:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2024-09-15 19:49:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20)
[2024-09-15 19:49:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions.
[2024-09-15 19:49:44,095 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109
[2024-09-15 19:49:44,096 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:49:44,096 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions.
[2024-09-15 19:49:44,096 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51)
[2024-09-15 19:49:44,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions.
[2024-09-15 19:49:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2024-09-15 19:49:44,097 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:49:44,097 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:49:44,114 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-09-15 19:49:44,298 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:49:44,298 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:49:44,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:49:44,298 INFO L85 PathProgramCache]: Analyzing trace with hash 324106212, now seen corresponding path program 17 times
[2024-09-15 19:49:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:49:44,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926429264]
[2024-09-15 19:49:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:49:44,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:49:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:49:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:49:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:44,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:49:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:49:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2024-09-15 19:49:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:49:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926429264]
[2024-09-15 19:49:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926429264] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:49:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74224821]
[2024-09-15 19:49:45,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-09-15 19:49:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:49:45,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:49:45,686 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)
[2024-09-15 19:49:45,687 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-09-15 19:49:46,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s)
[2024-09-15 19:49:46,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:49:46,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 38 conjuncts are in the unsatisfiable core
[2024-09-15 19:49:46,669 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:49:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2024-09-15 19:49:46,752 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:50:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2024-09-15 19:50:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74224821] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:50:07,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:50:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 42
[2024-09-15 19:50:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110664212]
[2024-09-15 19:50:07,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:50:07,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2024-09-15 19:50:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:50:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2024-09-15 19:50:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722
[2024-09-15 19:50:07,308 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54)
[2024-09-15 19:50:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:50:07,576 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions.
[2024-09-15 19:50:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-09-15 19:50:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) Word has length 115
[2024-09-15 19:50:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:50:07,577 INFO L225 Difference]: With dead ends: 73
[2024-09-15 19:50:07,577 INFO L226 Difference]: Without dead ends: 69
[2024-09-15 19:50:07,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 230 SyntacticMatches, 18 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1106, Invalid=2316, Unknown=0, NotChecked=0, Total=3422
[2024-09-15 19:50:07,579 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 333 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:50:07,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 181 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:50:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-09-15 19:50:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-09-15 19:50:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21)
[2024-09-15 19:50:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions.
[2024-09-15 19:50:07,594 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115
[2024-09-15 19:50:07,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:50:07,594 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions.
[2024-09-15 19:50:07,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54)
[2024-09-15 19:50:07,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:50:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions.
[2024-09-15 19:50:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2024-09-15 19:50:07,596 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:50:07,596 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:50:07,620 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-09-15 19:50:07,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-09-15 19:50:07,797 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:50:07,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:50:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1013633252, now seen corresponding path program 18 times
[2024-09-15 19:50:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:50:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083062669]
[2024-09-15 19:50:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:50:07,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:50:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:07,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:50:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:07,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:50:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:08,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked.
[2024-09-15 19:50:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:50:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083062669]
[2024-09-15 19:50:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083062669] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:50:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784218462]
[2024-09-15 19:50:09,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-09-15 19:50:09,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:50:09,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:50:09,253 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)
[2024-09-15 19:50:09,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-09-15 19:50:10,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2024-09-15 19:50:10,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:50:10,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-09-15 19:50:10,456 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:50:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked.
[2024-09-15 19:50:10,545 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:50:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked.
[2024-09-15 19:50:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784218462] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:50:35,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:50:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 41] total 44
[2024-09-15 19:50:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029345032]
[2024-09-15 19:50:35,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:50:35,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2024-09-15 19:50:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:50:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2024-09-15 19:50:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=1406, Unknown=0, NotChecked=0, Total=1892
[2024-09-15 19:50:35,155 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57)
[2024-09-15 19:50:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:50:35,348 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions.
[2024-09-15 19:50:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2024-09-15 19:50:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) Word has length 121
[2024-09-15 19:50:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:50:35,349 INFO L225 Difference]: With dead ends: 76
[2024-09-15 19:50:35,349 INFO L226 Difference]: Without dead ends: 72
[2024-09-15 19:50:35,350 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 242 SyntacticMatches, 19 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1224, Invalid=2558, Unknown=0, NotChecked=0, Total=3782
[2024-09-15 19:50:35,351 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:50:35,351 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 193 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:50:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-09-15 19:50:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2024-09-15 19:50:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22)
[2024-09-15 19:50:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions.
[2024-09-15 19:50:35,357 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121
[2024-09-15 19:50:35,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:50:35,358 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions.
[2024-09-15 19:50:35,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57)
[2024-09-15 19:50:35,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:50:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions.
[2024-09-15 19:50:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2024-09-15 19:50:35,359 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:50:35,359 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:50:35,385 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2024-09-15 19:50:35,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:50:35,560 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:50:35,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:50:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash -277351196, now seen corresponding path program 19 times
[2024-09-15 19:50:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:50:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400868187]
[2024-09-15 19:50:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:50:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:50:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:35,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:50:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:35,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:50:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:35,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:36,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:37,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:50:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked.
[2024-09-15 19:50:37,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:50:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400868187]
[2024-09-15 19:50:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400868187] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:50:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210084473]
[2024-09-15 19:50:37,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-09-15 19:50:37,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:50:37,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:50:37,071 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)
[2024-09-15 19:50:37,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-09-15 19:50:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:50:38,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-09-15 19:50:38,539 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:50:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked.
[2024-09-15 19:50:38,632 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:51:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2024-09-15 19:51:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210084473] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:51:07,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:51:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 45
[2024-09-15 19:51:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143832641]
[2024-09-15 19:51:07,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:51:07,852 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2024-09-15 19:51:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:51:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2024-09-15 19:51:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980
[2024-09-15 19:51:07,853 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59)
[2024-09-15 19:51:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:51:08,091 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions.
[2024-09-15 19:51:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-09-15 19:51:08,091 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) Word has length 127
[2024-09-15 19:51:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:51:08,092 INFO L225 Difference]: With dead ends: 79
[2024-09-15 19:51:08,092 INFO L226 Difference]: Without dead ends: 75
[2024-09-15 19:51:08,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 254 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1345, Invalid=2687, Unknown=0, NotChecked=0, Total=4032
[2024-09-15 19:51:08,094 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 19:51:08,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 195 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 19:51:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-09-15 19:51:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75.
[2024-09-15 19:51:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23)
[2024-09-15 19:51:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions.
[2024-09-15 19:51:08,100 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127
[2024-09-15 19:51:08,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:51:08,100 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions.
[2024-09-15 19:51:08,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59)
[2024-09-15 19:51:08,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:51:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions.
[2024-09-15 19:51:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2024-09-15 19:51:08,101 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:51:08,101 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:51:08,123 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2024-09-15 19:51:08,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:51:08,302 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:51:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:51:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -653499876, now seen corresponding path program 20 times
[2024-09-15 19:51:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:51:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391885271]
[2024-09-15 19:51:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:51:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:51:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:08,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:51:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:08,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-15 19:51:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:09,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:10,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:11,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:11,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:11,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:12,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:12,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:12,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:13,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 19:51:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:51:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked.
[2024-09-15 19:51:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:51:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391885271]
[2024-09-15 19:51:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391885271] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:51:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016127495]
[2024-09-15 19:51:14,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 19:51:14,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:51:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:51:14,180 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)
[2024-09-15 19:51:14,181 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-09-15 19:51:15,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-15 19:51:15,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 19:51:15,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 177 conjuncts are in the unsatisfiable core
[2024-09-15 19:51:15,947 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:51:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 39 proven. 610 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked.
[2024-09-15 19:51:17,119 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 19:51:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked.
[2024-09-15 19:51:25,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016127495] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 19:51:25,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 19:51:25,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 61
[2024-09-15 19:51:25,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254619807]
[2024-09-15 19:51:25,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 19:51:25,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2024-09-15 19:51:25,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:51:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2024-09-15 19:51:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=3524, Unknown=0, NotChecked=0, Total=3660
[2024-09-15 19:51:25,054 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26)
[2024-09-15 19:51:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:51:27,301 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions.
[2024-09-15 19:51:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2024-09-15 19:51:27,301 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26) Word has length 133
[2024-09-15 19:51:27,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:51:27,302 INFO L225 Difference]: With dead ends: 78
[2024-09-15 19:51:27,302 INFO L226 Difference]: Without dead ends: 0
[2024-09-15 19:51:27,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=691, Invalid=10865, Unknown=0, NotChecked=0, Total=11556
[2024-09-15 19:51:27,306 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 169 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-09-15 19:51:27,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1215 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-09-15 19:51:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-15 19:51:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-15 19:51:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 19:51:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-15 19:51:27,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133
[2024-09-15 19:51:27,307 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:51:27,307 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-15 19:51:27,307 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26)
[2024-09-15 19:51:27,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:51:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-15 19:51:27,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-15 19:51:27,310 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-15 19:51:27,331 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-09-15 19:51:27,514 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2024-09-15 19:51:27,517 INFO L408 BasicCegarLoop]: Path program histogram: [20, 1]
[2024-09-15 19:51:27,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-09-15 19:51:28,350 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-15 19:51:28,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:51:28 BoogieIcfgContainer
[2024-09-15 19:51:28,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-15 19:51:28,368 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-15 19:51:28,368 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-15 19:51:28,368 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-15 19:51:28,369 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:48:03" (3/4) ...
[2024-09-15 19:51:28,370 INFO L139 WitnessPrinter]: Generating witness for correct program
[2024-09-15 19:51:28,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init
[2024-09-15 19:51:28,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum
[2024-09-15 19:51:28,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main
[2024-09-15 19:51:28,376 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2024-09-15 19:51:28,376 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2024-09-15 19:51:28,376 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2024-09-15 19:51:28,376 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-09-15 19:51:28,460 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml
[2024-09-15 19:51:28,461 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml
[2024-09-15 19:51:28,461 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-15 19:51:28,462 INFO L158 Benchmark]: Toolchain (without parser) took 205633.50ms. Allocated memory was 56.6MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 35.7MB in the beginning and 1.0GB in the end (delta: -990.9MB). Peak memory consumption was 564.0MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,462 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 41.9MB. Free memory was 22.2MB in the beginning and 22.2MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 19:51:28,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.48ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 24.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.19ms. Allocated memory is still 56.6MB. Free memory was 24.5MB in the beginning and 23.6MB in the end (delta: 911.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 19:51:28,466 INFO L158 Benchmark]: Boogie Preprocessor took 38.83ms. Allocated memory is still 56.6MB. Free memory was 23.6MB in the beginning and 36.3MB in the end (delta: -12.7MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,467 INFO L158 Benchmark]: RCFGBuilder took 305.88ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 25.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,467 INFO L158 Benchmark]: TraceAbstraction took 204932.52ms. Allocated memory was 56.6MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 24.6MB in the beginning and 1.0GB in the end (delta: -1.0GB). Peak memory consumption was 548.8MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,467 INFO L158 Benchmark]: Witness Printer took 93.70ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2024-09-15 19:51:28,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15ms. Allocated memory is still 41.9MB. Free memory was 22.2MB in the beginning and 22.2MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 234.48ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 24.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 20.19ms. Allocated memory is still 56.6MB. Free memory was 24.5MB in the beginning and 23.6MB in the end (delta: 911.8kB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 38.83ms. Allocated memory is still 56.6MB. Free memory was 23.6MB in the beginning and 36.3MB in the end (delta: -12.7MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB.
* RCFGBuilder took 305.88ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 25.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 204932.52ms. Allocated memory was 56.6MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 24.6MB in the beginning and 1.0GB in the end (delta: -1.0GB). Peak memory consumption was 548.8MB. Max. memory is 16.1GB.
* Witness Printer took 93.70ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 18]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 204.0s, OverallIterations: 21, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2150 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1900 mSDsluCounter, 3606 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3335 mSDsCounter, 827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4234 IncrementalHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 827 mSolverCounterUnsat, 271 mSDtfsCounter, 4234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4077 GetRequests, 3075 SyntacticMatches, 210 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13976 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=20, InterpolantAutomatonStates: 340, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 184.3s InterpolantComputationTime, 3053 NumberOfCodeBlocks, 3053 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 4512 ConstructedInterpolants, 0 QuantifiedInterpolants, 13567 SizeOfPredicates, 212 NumberOfNonLiveVariables, 4860 ConjunctsInSsa, 633 ConjunctsInUnsatCore, 61 InterpolantComputations, 1 PerfectInterpolantSequences, 11291/26460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- ProcedureContractResult [Line: 5]: Procedure Contract for sum
Derived contract for procedure sum. Ensures: (\result == ((long long) \old(n) + \old(m)))
RESULT: Ultimate proved your program to be correct!
[2024-09-15 19:51:28,550 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE