./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 15:25:03,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 15:25:03,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 15:25:03,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 15:25:03,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 15:25:03,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 15:25:03,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 15:25:03,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 15:25:03,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 15:25:03,954 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 15:25:03,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 15:25:03,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 15:25:03,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 15:25:03,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 15:25:03,955 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 15:25:03,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 15:25:03,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 15:25:03,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 15:25:03,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 15:25:03,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 15:25:03,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 15:25:03,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 15:25:03,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:25:03,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 15:25:03,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 15:25:03,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 15:25:03,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 15:25:03,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 15:25:03,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 15:25:03,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 15:25:03,962 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 15:25:04,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 15:25:04,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 15:25:04,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 15:25:04,243 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 15:25:04,243 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 15:25:04,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-12 15:25:05,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 15:25:05,693 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 15:25:05,693 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-12 15:25:05,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/678a9d743/f3496e86175243f7a969032dd5267459/FLAGfd8045a73 [2024-09-12 15:25:05,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/678a9d743/f3496e86175243f7a969032dd5267459 [2024-09-12 15:25:05,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 15:25:05,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 15:25:05,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 15:25:05,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 15:25:05,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 15:25:05,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfa1b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05, skipping insertion in model container [2024-09-12 15:25:05,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 15:25:05,841 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i[893,906] [2024-09-12 15:25:05,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:25:05,857 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 15:25:05,865 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i[893,906] [2024-09-12 15:25:05,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:25:05,881 INFO L204 MainTranslator]: Completed translation [2024-09-12 15:25:05,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05 WrapperNode [2024-09-12 15:25:05,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 15:25:05,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 15:25:05,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 15:25:05,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 15:25:05,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,896 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 15:25:05,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 15:25:05,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 15:25:05,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 15:25:05,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 15:25:05,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,913 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]. [2024-09-12 15:25:05,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 15:25:05,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 15:25:05,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 15:25:05,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 15:25:05,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (1/1) ... [2024-09-12 15:25:05,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:25:05,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:05,969 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) [2024-09-12 15:25:05,971 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 [2024-09-12 15:25:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 15:25:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 15:25:06,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 15:25:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 15:25:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 15:25:06,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 15:25:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 15:25:06,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 15:25:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 15:25:06,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 15:25:06,054 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 15:25:06,056 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 15:25:06,163 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 15:25:06,163 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 15:25:06,175 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 15:25:06,175 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 15:25:06,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:25:06 BoogieIcfgContainer [2024-09-12 15:25:06,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 15:25:06,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 15:25:06,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 15:25:06,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 15:25:06,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 03:25:05" (1/3) ... [2024-09-12 15:25:06,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6110d79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:25:06, skipping insertion in model container [2024-09-12 15:25:06,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:05" (2/3) ... [2024-09-12 15:25:06,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6110d79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:25:06, skipping insertion in model container [2024-09-12 15:25:06,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:25:06" (3/3) ... [2024-09-12 15:25:06,181 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-12 15:25:06,192 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 15:25:06,192 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 15:25:06,226 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 15:25:06,230 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;@446b5486, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 15:25:06,230 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 15:25:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:25:06,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:06,238 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:06,238 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-09-12 15:25:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721813286] [2024-09-12 15:25:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:06,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721813286] [2024-09-12 15:25:06,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721813286] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:25:06,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 15:25:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545127130] [2024-09-12 15:25:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:06,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 15:25:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 15:25:06,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:25:06,355 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:06,371 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-12 15:25:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 15:25:06,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:25:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:06,378 INFO L225 Difference]: With dead ends: 34 [2024-09-12 15:25:06,378 INFO L226 Difference]: Without dead ends: 16 [2024-09-12 15:25:06,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:25:06,383 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:06,384 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-12 15:25:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-12 15:25:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-12 15:25:06,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-12 15:25:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:06,409 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-12 15:25:06,409 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-12 15:25:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:25:06,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:06,411 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:06,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 15:25:06,411 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-09-12 15:25:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525011820] [2024-09-12 15:25:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:06,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:06,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525011820] [2024-09-12 15:25:06,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525011820] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:06,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:25:06,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 15:25:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35717376] [2024-09-12 15:25:06,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:06,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 15:25:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 15:25:06,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 15:25:06,561 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:06,593 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-12 15:25:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 15:25:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:25:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:06,594 INFO L225 Difference]: With dead ends: 28 [2024-09-12 15:25:06,594 INFO L226 Difference]: Without dead ends: 17 [2024-09-12 15:25:06,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 15:25:06,595 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:06,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-12 15:25:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-12 15:25:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-12 15:25:06,602 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-12 15:25:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:06,602 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-12 15:25:06,602 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:06,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-12 15:25:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 15:25:06,604 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:06,604 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:06,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 15:25:06,605 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:06,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-09-12 15:25:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768191621] [2024-09-12 15:25:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768191621] [2024-09-12 15:25:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768191621] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911507376] [2024-09-12 15:25:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:06,793 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) [2024-09-12 15:25:06,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 15:25:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:06,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 15:25:06,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:06,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 15:25:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911507376] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:06,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 15:25:06,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-12 15:25:06,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477510151] [2024-09-12 15:25:06,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:06,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 15:25:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 15:25:06,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 15:25:06,934 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:06,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:06,994 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-12 15:25:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 15:25:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 15:25:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:06,996 INFO L225 Difference]: With dead ends: 29 [2024-09-12 15:25:06,997 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 15:25:06,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:06,998 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:06,999 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 15:25:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-12 15:25:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-12 15:25:07,013 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-12 15:25:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:07,013 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-12 15:25:07,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:07,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-12 15:25:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 15:25:07,017 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:07,017 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:07,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:07,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:07,219 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:07,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-09-12 15:25:07,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077320232] [2024-09-12 15:25:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-12 15:25:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077320232] [2024-09-12 15:25:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077320232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465329619] [2024-09-12 15:25:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:07,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:07,327 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) [2024-09-12 15:25:07,330 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 15:25:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 15:25:07,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:07,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:07,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465329619] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:07,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:07,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-12 15:25:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958021629] [2024-09-12 15:25:07,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:07,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 15:25:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 15:25:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 15:25:07,457 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:07,490 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-12 15:25:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 15:25:07,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-12 15:25:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:07,494 INFO L225 Difference]: With dead ends: 38 [2024-09-12 15:25:07,494 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 15:25:07,496 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 15:25:07,498 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:07,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 15:25:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-12 15:25:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-12 15:25:07,506 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-12 15:25:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:07,507 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-12 15:25:07,508 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-12 15:25:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 15:25:07,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:07,509 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:07,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 15:25:07,710 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:07,711 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:07,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-09-12 15:25:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868622024] [2024-09-12 15:25:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 15:25:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868622024] [2024-09-12 15:25:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868622024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877007370] [2024-09-12 15:25:07,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:07,856 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) [2024-09-12 15:25:07,861 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 15:25:07,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:07,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 15:25:07,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:07,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877007370] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:08,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-12 15:25:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865129228] [2024-09-12 15:25:08,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:08,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 15:25:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 15:25:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:08,024 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:08,074 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-12 15:25:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 15:25:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-12 15:25:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:08,076 INFO L225 Difference]: With dead ends: 37 [2024-09-12 15:25:08,076 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 15:25:08,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:08,076 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:08,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 15:25:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-12 15:25:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-12 15:25:08,081 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-12 15:25:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:08,081 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-12 15:25:08,081 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:08,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-12 15:25:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 15:25:08,082 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:08,082 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:08,094 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:08,282 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:08,283 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:08,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-09-12 15:25:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846362719] [2024-09-12 15:25:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 15:25:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:08,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846362719] [2024-09-12 15:25:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846362719] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:08,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524871962] [2024-09-12 15:25:08,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:08,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:08,415 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) [2024-09-12 15:25:08,417 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 15:25:08,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 15:25:08,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:08,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 15:25:08,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:08,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524871962] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:08,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-12 15:25:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876413360] [2024-09-12 15:25:08,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:08,563 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 15:25:08,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 15:25:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:08,566 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:08,609 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-12 15:25:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 15:25:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-09-12 15:25:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:08,610 INFO L225 Difference]: With dead ends: 49 [2024-09-12 15:25:08,611 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 15:25:08,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:08,612 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:08,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 15:25:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-12 15:25:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-12 15:25:08,617 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-12 15:25:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:08,617 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-12 15:25:08,617 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:08,617 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-12 15:25:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 15:25:08,618 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:08,618 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:08,631 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:08,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:08,819 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:08,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-09-12 15:25:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861424691] [2024-09-12 15:25:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 15:25:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:08,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:08,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861424691] [2024-09-12 15:25:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861424691] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:08,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139444080] [2024-09-12 15:25:08,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:08,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:08,986 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) [2024-09-12 15:25:08,987 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 15:25:09,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:09,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:09,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 15:25:09,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:09,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139444080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:09,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:09,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-12 15:25:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64490256] [2024-09-12 15:25:09,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:09,189 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 15:25:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 15:25:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:09,189 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:09,249 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-12 15:25:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 15:25:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-12 15:25:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:09,251 INFO L225 Difference]: With dead ends: 45 [2024-09-12 15:25:09,252 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 15:25:09,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:09,253 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:09,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 15:25:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-12 15:25:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-12 15:25:09,264 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-12 15:25:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:09,264 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-12 15:25:09,266 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-12 15:25:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 15:25:09,267 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:09,267 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:09,282 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:09,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 15:25:09,468 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:09,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-09-12 15:25:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711811250] [2024-09-12 15:25:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:09,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:09,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:09,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 15:25:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:09,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:09,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711811250] [2024-09-12 15:25:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711811250] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144284189] [2024-09-12 15:25:09,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:09,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:09,620 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) [2024-09-12 15:25:09,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 15:25:09,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 15:25:09,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:09,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 15:25:09,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:09,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144284189] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:09,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-12 15:25:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090291169] [2024-09-12 15:25:09,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:09,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 15:25:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 15:25:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:09,810 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:09,851 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-12 15:25:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 15:25:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-09-12 15:25:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:09,852 INFO L225 Difference]: With dead ends: 60 [2024-09-12 15:25:09,852 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 15:25:09,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:09,853 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:09,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 15:25:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-12 15:25:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-12 15:25:09,859 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-12 15:25:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:09,859 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-12 15:25:09,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:09,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-12 15:25:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 15:25:09,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:09,861 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:09,874 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 15:25:10,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:10,062 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:10,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-09-12 15:25:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73226516] [2024-09-12 15:25:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:10,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 15:25:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73226516] [2024-09-12 15:25:10,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73226516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667816312] [2024-09-12 15:25:10,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:10,150 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) [2024-09-12 15:25:10,159 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 15:25:10,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-12 15:25:10,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:10,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 15:25:10,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:10,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667816312] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:10,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-12 15:25:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952201908] [2024-09-12 15:25:10,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:10,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 15:25:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 15:25:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:10,292 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:10,336 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-12 15:25:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 15:25:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-12 15:25:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:10,337 INFO L225 Difference]: With dead ends: 53 [2024-09-12 15:25:10,337 INFO L226 Difference]: Without dead ends: 51 [2024-09-12 15:25:10,337 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 15:25:10,337 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:10,337 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-12 15:25:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-12 15:25:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-12 15:25:10,342 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-12 15:25:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:10,343 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-12 15:25:10,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:10,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-12 15:25:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 15:25:10,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:10,344 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:10,357 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:10,548 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:10,549 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:10,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-09-12 15:25:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:10,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900785354] [2024-09-12 15:25:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:10,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 15:25:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900785354] [2024-09-12 15:25:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900785354] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071174984] [2024-09-12 15:25:10,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:10,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:10,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:10,661 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) [2024-09-12 15:25:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 15:25:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:10,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 15:25:10,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:10,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071174984] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:10,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-12 15:25:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626736947] [2024-09-12 15:25:10,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:10,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 15:25:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 15:25:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:10,806 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:10,846 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-12 15:25:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 15:25:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-09-12 15:25:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:10,847 INFO L225 Difference]: With dead ends: 71 [2024-09-12 15:25:10,847 INFO L226 Difference]: Without dead ends: 48 [2024-09-12 15:25:10,847 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:10,848 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:10,848 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-12 15:25:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-12 15:25:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-12 15:25:10,853 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-12 15:25:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:10,853 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-12 15:25:10,853 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-12 15:25:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 15:25:10,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:10,854 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:10,867 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 15:25:11,054 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:11,055 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:11,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-09-12 15:25:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705045795] [2024-09-12 15:25:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:25:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:11,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:11,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705045795] [2024-09-12 15:25:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705045795] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:11,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825508042] [2024-09-12 15:25:11,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:11,154 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) [2024-09-12 15:25:11,155 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 15:25:11,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:11,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:11,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 15:25:11,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:11,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825508042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:11,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:11,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-12 15:25:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27045237] [2024-09-12 15:25:11,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:11,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 15:25:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 15:25:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 15:25:11,444 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:11,539 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-12 15:25:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 15:25:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-12 15:25:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:11,540 INFO L225 Difference]: With dead ends: 61 [2024-09-12 15:25:11,540 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 15:25:11,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:11,541 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:11,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 15:25:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-12 15:25:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-12 15:25:11,546 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-12 15:25:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:11,546 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-12 15:25:11,546 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-12 15:25:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 15:25:11,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:11,547 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:11,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 15:25:11,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 15:25:11,747 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:11,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-09-12 15:25:11,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:11,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352317315] [2024-09-12 15:25:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:25:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352317315] [2024-09-12 15:25:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352317315] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972164976] [2024-09-12 15:25:11,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:11,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:11,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:11,964 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) [2024-09-12 15:25:11,968 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 15:25:12,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 15:25:12,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:12,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 15:25:12,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:12,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972164976] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:12,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:12,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-12 15:25:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381742260] [2024-09-12 15:25:12,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:12,191 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 15:25:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 15:25:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:12,192 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:12,254 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-12 15:25:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 15:25:12,255 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-09-12 15:25:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:12,256 INFO L225 Difference]: With dead ends: 82 [2024-09-12 15:25:12,256 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 15:25:12,256 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:12,257 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:12,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 15:25:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 15:25:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-12 15:25:12,264 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-12 15:25:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:12,264 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-12 15:25:12,264 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:12,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-12 15:25:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 15:25:12,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:12,265 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:12,280 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:12,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 15:25:12,471 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:12,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-09-12 15:25:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:12,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685529978] [2024-09-12 15:25:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 15:25:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:12,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685529978] [2024-09-12 15:25:12,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685529978] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426979902] [2024-09-12 15:25:12,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:12,592 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) [2024-09-12 15:25:12,595 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 15:25:12,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:12,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:12,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 15:25:12,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:12,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:12,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426979902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:12,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-12 15:25:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468492121] [2024-09-12 15:25:12,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:12,765 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 15:25:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 15:25:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:12,766 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:12,819 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-12 15:25:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 15:25:12,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-12 15:25:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:12,820 INFO L225 Difference]: With dead ends: 69 [2024-09-12 15:25:12,820 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 15:25:12,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-12 15:25:12,820 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:12,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 15:25:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-12 15:25:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-12 15:25:12,825 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-12 15:25:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:12,826 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-12 15:25:12,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:12,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-12 15:25:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 15:25:12,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:12,827 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:12,839 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:13,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:13,031 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:13,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-09-12 15:25:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97785272] [2024-09-12 15:25:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 15:25:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97785272] [2024-09-12 15:25:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97785272] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059282002] [2024-09-12 15:25:13,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:13,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:13,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:13,198 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) [2024-09-12 15:25:13,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 15:25:13,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 15:25:13,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:13,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 15:25:13,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:13,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059282002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:13,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-12 15:25:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324043138] [2024-09-12 15:25:13,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:13,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 15:25:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 15:25:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:13,397 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:13,446 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-12 15:25:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 15:25:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-09-12 15:25:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:13,447 INFO L225 Difference]: With dead ends: 93 [2024-09-12 15:25:13,447 INFO L226 Difference]: Without dead ends: 64 [2024-09-12 15:25:13,447 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:13,448 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:13,448 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-12 15:25:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-12 15:25:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-12 15:25:13,456 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-12 15:25:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:13,457 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-12 15:25:13,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-12 15:25:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 15:25:13,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:13,458 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:13,471 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 15:25:13,661 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 15:25:13,662 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:13,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-09-12 15:25:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:13,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798154899] [2024-09-12 15:25:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 15:25:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798154899] [2024-09-12 15:25:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798154899] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594880100] [2024-09-12 15:25:13,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:13,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:13,819 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) [2024-09-12 15:25:13,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 15:25:13,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 15:25:13,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:13,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 15:25:13,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:13,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594880100] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:14,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:14,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-12 15:25:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597992442] [2024-09-12 15:25:14,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:14,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 15:25:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 15:25:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-12 15:25:14,010 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:14,063 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-12 15:25:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 15:25:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-12 15:25:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:14,064 INFO L225 Difference]: With dead ends: 77 [2024-09-12 15:25:14,064 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 15:25:14,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:14,065 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:14,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 15:25:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-12 15:25:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-12 15:25:14,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-12 15:25:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:14,070 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-12 15:25:14,070 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:14,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-12 15:25:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 15:25:14,071 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:14,071 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:14,088 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 15:25:14,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 15:25:14,274 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-09-12 15:25:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86648205] [2024-09-12 15:25:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 15:25:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86648205] [2024-09-12 15:25:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86648205] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:14,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074869449] [2024-09-12 15:25:14,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:14,485 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) [2024-09-12 15:25:14,489 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 15:25:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:14,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 15:25:14,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:14,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074869449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:14,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-12 15:25:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557763491] [2024-09-12 15:25:14,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:14,707 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 15:25:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 15:25:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:14,708 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:14,776 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-12 15:25:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 15:25:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 68 [2024-09-12 15:25:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:14,777 INFO L225 Difference]: With dead ends: 104 [2024-09-12 15:25:14,778 INFO L226 Difference]: Without dead ends: 72 [2024-09-12 15:25:14,778 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:14,778 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:14,778 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-12 15:25:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-12 15:25:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-12 15:25:14,784 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-12 15:25:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:14,784 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-12 15:25:14,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:14,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-12 15:25:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 15:25:14,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:14,785 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:14,796 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 15:25:14,985 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 15:25:14,985 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:14,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-09-12 15:25:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162509076] [2024-09-12 15:25:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 15:25:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162509076] [2024-09-12 15:25:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162509076] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351188883] [2024-09-12 15:25:15,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:15,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:15,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:15,276 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) [2024-09-12 15:25:15,278 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 15:25:15,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:15,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:15,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 15:25:15,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:15,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:15,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351188883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:15,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:15,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-12 15:25:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453117971] [2024-09-12 15:25:15,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:15,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 15:25:15,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 15:25:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:15,537 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:15,602 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-12 15:25:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 15:25:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-12 15:25:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:15,604 INFO L225 Difference]: With dead ends: 85 [2024-09-12 15:25:15,604 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 15:25:15,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:15,604 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:15,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 15:25:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-12 15:25:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-12 15:25:15,609 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-12 15:25:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:15,609 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-12 15:25:15,609 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:15,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-12 15:25:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 15:25:15,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:15,614 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:15,636 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 15:25:15,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 15:25:15,814 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:15,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-09-12 15:25:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451031281] [2024-09-12 15:25:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:15,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 15:25:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:15,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451031281] [2024-09-12 15:25:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451031281] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676738379] [2024-09-12 15:25:16,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:16,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:16,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:16,009 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) [2024-09-12 15:25:16,010 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 15:25:16,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 15:25:16,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:16,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 15:25:16,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:16,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676738379] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:16,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:16,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-12 15:25:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518733662] [2024-09-12 15:25:16,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:16,314 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 15:25:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 15:25:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:25:16,315 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:16,417 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-12 15:25:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 15:25:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-09-12 15:25:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:16,418 INFO L225 Difference]: With dead ends: 115 [2024-09-12 15:25:16,418 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 15:25:16,419 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:25:16,419 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:16,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 15:25:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-12 15:25:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-12 15:25:16,424 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-12 15:25:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:16,424 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-12 15:25:16,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:16,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-12 15:25:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 15:25:16,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:16,425 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:16,440 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 15:25:16,628 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:16,628 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:16,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-09-12 15:25:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753059602] [2024-09-12 15:25:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753059602] [2024-09-12 15:25:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753059602] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457549478] [2024-09-12 15:25:16,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:16,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:16,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:16,798 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) [2024-09-12 15:25:16,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 15:25:16,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:16,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:16,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 15:25:16,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:16,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457549478] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:17,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:17,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-12 15:25:17,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212075132] [2024-09-12 15:25:17,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:17,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 15:25:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 15:25:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:17,108 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:17,189 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-12 15:25:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 15:25:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-12 15:25:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:17,190 INFO L225 Difference]: With dead ends: 93 [2024-09-12 15:25:17,190 INFO L226 Difference]: Without dead ends: 91 [2024-09-12 15:25:17,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:17,191 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:17,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-12 15:25:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-12 15:25:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-12 15:25:17,196 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-12 15:25:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:17,196 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-12 15:25:17,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:17,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-12 15:25:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 15:25:17,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:17,197 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:17,211 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:17,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:17,401 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:17,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-09-12 15:25:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:17,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106678029] [2024-09-12 15:25:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:17,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106678029] [2024-09-12 15:25:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106678029] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261613383] [2024-09-12 15:25:17,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:17,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:17,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:17,630 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) [2024-09-12 15:25:17,631 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 15:25:17,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 15:25:17,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:17,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 15:25:17,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:17,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261613383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:18,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:18,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-09-12 15:25:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210583977] [2024-09-12 15:25:18,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:18,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 15:25:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 15:25:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:25:18,005 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:18,088 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-12 15:25:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 15:25:18,088 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 84 [2024-09-12 15:25:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:18,089 INFO L225 Difference]: With dead ends: 126 [2024-09-12 15:25:18,089 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 15:25:18,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:25:18,090 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:18,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 15:25:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 15:25:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-12 15:25:18,095 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-12 15:25:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:18,095 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-12 15:25:18,095 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:18,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-12 15:25:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 15:25:18,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:18,096 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:18,111 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 15:25:18,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:18,299 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:18,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-09-12 15:25:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220521640] [2024-09-12 15:25:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220521640] [2024-09-12 15:25:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220521640] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501609747] [2024-09-12 15:25:18,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:18,471 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) [2024-09-12 15:25:18,476 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 15:25:18,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 15:25:18,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:18,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 15:25:18,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:18,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501609747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:18,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:18,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-12 15:25:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357469370] [2024-09-12 15:25:18,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:18,761 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 15:25:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 15:25:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:18,761 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:18,835 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-12 15:25:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 15:25:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-12 15:25:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:18,836 INFO L225 Difference]: With dead ends: 101 [2024-09-12 15:25:18,836 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 15:25:18,836 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-12 15:25:18,837 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:18,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 15:25:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-12 15:25:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-12 15:25:18,845 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-12 15:25:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:18,845 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-12 15:25:18,845 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:18,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-12 15:25:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 15:25:18,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:18,847 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:18,859 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:19,051 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 15:25:19,051 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-09-12 15:25:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179104192] [2024-09-12 15:25:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179104192] [2024-09-12 15:25:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179104192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485006789] [2024-09-12 15:25:19,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:19,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:19,316 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) [2024-09-12 15:25:19,316 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 15:25:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:19,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 15:25:19,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:19,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485006789] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:19,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:19,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-09-12 15:25:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016777077] [2024-09-12 15:25:19,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:19,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 15:25:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 15:25:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:19,664 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:19,745 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-12 15:25:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 15:25:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-09-12 15:25:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:19,748 INFO L225 Difference]: With dead ends: 137 [2024-09-12 15:25:19,748 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 15:25:19,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:19,749 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:19,749 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 15:25:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-12 15:25:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-12 15:25:19,758 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-12 15:25:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:19,758 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-12 15:25:19,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:19,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-12 15:25:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 15:25:19,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:19,759 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:19,772 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 15:25:19,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 15:25:19,960 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:19,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-09-12 15:25:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085885297] [2024-09-12 15:25:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:25:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:25:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:25:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:25:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:25:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:25:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:25:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:20,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085885297] [2024-09-12 15:25:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085885297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092747680] [2024-09-12 15:25:20,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:20,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:20,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:20,243 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 15:25:20,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:20,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:20,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 15:25:20,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:20,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092747680] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:20,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-12 15:25:20,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286310542] [2024-09-12 15:25:20,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:20,776 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 15:25:20,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:20,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 15:25:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-12 15:25:20,777 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:20,858 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-12 15:25:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 15:25:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-12 15:25:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:20,861 INFO L225 Difference]: With dead ends: 109 [2024-09-12 15:25:20,861 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 15:25:20,861 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:20,862 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:20,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 15:25:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-12 15:25:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-12 15:25:20,872 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-12 15:25:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:20,876 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-12 15:25:20,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:20,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-12 15:25:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-12 15:25:20,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:20,877 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:20,893 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:21,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:21,077 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:21,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-09-12 15:25:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116608668] [2024-09-12 15:25:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:25:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:25:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:25:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:25:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:25:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:25:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:25:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:25:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:21,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116608668] [2024-09-12 15:25:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116608668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480487068] [2024-09-12 15:25:21,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:21,533 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:21,537 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 15:25:21,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-12 15:25:21,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:21,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 15:25:21,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:21,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:22,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480487068] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:22,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-09-12 15:25:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525664226] [2024-09-12 15:25:22,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:22,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 15:25:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:22,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 15:25:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:25:22,038 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:22,140 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-12 15:25:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 15:25:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 100 [2024-09-12 15:25:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:22,142 INFO L225 Difference]: With dead ends: 148 [2024-09-12 15:25:22,142 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 15:25:22,142 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:25:22,143 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:22,143 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 15:25:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-12 15:25:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-12 15:25:22,148 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-12 15:25:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:22,149 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-12 15:25:22,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:22,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-12 15:25:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-12 15:25:22,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:22,150 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:22,165 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-12 15:25:22,353 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 15:25:22,353 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:22,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-09-12 15:25:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645597539] [2024-09-12 15:25:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:25:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:25:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:25:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:25:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:25:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:25:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:25:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645597539] [2024-09-12 15:25:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645597539] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854672269] [2024-09-12 15:25:22,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:22,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:22,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:22,586 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:22,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 15:25:22,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:22,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:22,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 15:25:22,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:22,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:25:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854672269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:22,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:22,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-12 15:25:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686559400] [2024-09-12 15:25:22,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:22,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 15:25:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 15:25:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:22,910 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:22,989 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-12 15:25:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 15:25:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-12 15:25:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:22,990 INFO L225 Difference]: With dead ends: 117 [2024-09-12 15:25:22,990 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 15:25:22,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-12 15:25:22,991 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:22,991 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 15:25:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-12 15:25:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-12 15:25:22,996 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-12 15:25:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:22,997 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-12 15:25:22,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:22,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-12 15:25:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 15:25:22,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:22,998 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:23,010 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:23,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 15:25:23,202 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:23,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-09-12 15:25:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594388505] [2024-09-12 15:25:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:25:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:25:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:25:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:25:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:25:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:25:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:25:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:25:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594388505] [2024-09-12 15:25:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594388505] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071845470] [2024-09-12 15:25:23,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:23,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:23,529 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:23,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 15:25:23,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 15:25:23,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:23,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 15:25:23,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:23,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071845470] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:24,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-09-12 15:25:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475489404] [2024-09-12 15:25:24,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:24,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 15:25:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 15:25:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:25:24,062 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:24,163 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-12 15:25:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 15:25:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-09-12 15:25:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:24,164 INFO L225 Difference]: With dead ends: 159 [2024-09-12 15:25:24,164 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 15:25:24,164 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:25:24,165 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:24,165 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 15:25:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-12 15:25:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-12 15:25:24,171 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-12 15:25:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:24,171 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-12 15:25:24,171 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:24,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-12 15:25:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-12 15:25:24,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:24,172 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-12 15:25:24,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 15:25:24,373 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:24,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-09-12 15:25:24,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698531041] [2024-09-12 15:25:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:25:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:25:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:25:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:25:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:25:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:25:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:25:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:24,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:24,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698531041] [2024-09-12 15:25:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698531041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:24,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620530841] [2024-09-12 15:25:24,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:24,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:24,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:24,712 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:24,720 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 15:25:24,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 15:25:24,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:24,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 15:25:24,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:24,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:25:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620530841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:25,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:25,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-12 15:25:25,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583208540] [2024-09-12 15:25:25,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:25,064 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 15:25:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 15:25:25,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-12 15:25:25,065 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:25,140 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-12 15:25:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 15:25:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-12 15:25:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:25,142 INFO L225 Difference]: With dead ends: 125 [2024-09-12 15:25:25,142 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 15:25:25,142 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:25:25,143 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:25,143 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 15:25:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-12 15:25:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-12 15:25:25,149 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-12 15:25:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:25,149 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-12 15:25:25,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:25,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-12 15:25:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-12 15:25:25,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:25,150 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:25,162 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:25,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 15:25:25,354 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:25,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-09-12 15:25:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042621024] [2024-09-12 15:25:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:25:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:25:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:25:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:25:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:25:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:25:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:25:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:25:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:25,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042621024] [2024-09-12 15:25:25,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042621024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798174630] [2024-09-12 15:25:25,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:25,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:25,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:25,716 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:25,716 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 15:25:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:25,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 15:25:25,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:25,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:26,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798174630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:26,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:26,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-09-12 15:25:26,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899164559] [2024-09-12 15:25:26,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:26,124 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 15:25:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 15:25:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:26,125 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:26,230 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-12 15:25:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 15:25:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 116 [2024-09-12 15:25:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:26,232 INFO L225 Difference]: With dead ends: 170 [2024-09-12 15:25:26,232 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 15:25:26,232 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:26,233 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:26,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 15:25:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-12 15:25:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-12 15:25:26,240 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-12 15:25:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:26,240 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-12 15:25:26,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:26,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-12 15:25:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-12 15:25:26,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:26,241 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:26,253 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:26,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:26,446 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:26,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-09-12 15:25:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384267667] [2024-09-12 15:25:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:25:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:25:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:25:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:25:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:25:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:25:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:25:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:26,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384267667] [2024-09-12 15:25:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384267667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157603476] [2024-09-12 15:25:26,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:26,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:26,711 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:26,716 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 15:25:26,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:26,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:26,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 15:25:26,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:26,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:25:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157603476] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:27,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-12 15:25:27,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688235114] [2024-09-12 15:25:27,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:27,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 15:25:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 15:25:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:25:27,092 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:27,188 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-12 15:25:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 15:25:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-12 15:25:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:27,189 INFO L225 Difference]: With dead ends: 133 [2024-09-12 15:25:27,189 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 15:25:27,189 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:25:27,190 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:27,190 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 15:25:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-12 15:25:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-12 15:25:27,196 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-12 15:25:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:27,196 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-12 15:25:27,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:27,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-12 15:25:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-12 15:25:27,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:27,197 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:27,215 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:27,399 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 15:25:27,399 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:27,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-09-12 15:25:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:27,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115330075] [2024-09-12 15:25:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:25:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:25:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:25:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:25:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:25:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:25:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:25:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:25:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115330075] [2024-09-12 15:25:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115330075] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183935236] [2024-09-12 15:25:27,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:27,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:27,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:27,919 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:27,921 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 15:25:28,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 15:25:28,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:28,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 15:25:28,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:28,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:28,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183935236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:28,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:28,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-09-12 15:25:28,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954095260] [2024-09-12 15:25:28,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:28,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 15:25:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 15:25:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:25:28,515 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:28,687 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-12 15:25:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 15:25:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 124 [2024-09-12 15:25:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:28,689 INFO L225 Difference]: With dead ends: 181 [2024-09-12 15:25:28,689 INFO L226 Difference]: Without dead ends: 128 [2024-09-12 15:25:28,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:25:28,690 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:28,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-12 15:25:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-12 15:25:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-12 15:25:28,709 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-12 15:25:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:28,712 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-12 15:25:28,712 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:28,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-12 15:25:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-12 15:25:28,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:28,713 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:28,737 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:28,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:28,913 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-09-12 15:25:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598883513] [2024-09-12 15:25:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:25:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:25:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:25:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:25:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:25:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:25:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:25:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:29,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598883513] [2024-09-12 15:25:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598883513] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779778180] [2024-09-12 15:25:29,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:29,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:29,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:29,262 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:29,266 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 15:25:29,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:29,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:29,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 15:25:29,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:29,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:25:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779778180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:29,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-12 15:25:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154670466] [2024-09-12 15:25:29,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:29,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 15:25:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 15:25:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:25:29,661 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:29,748 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-12 15:25:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 15:25:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-12 15:25:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:29,749 INFO L225 Difference]: With dead ends: 141 [2024-09-12 15:25:29,749 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 15:25:29,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:25:29,750 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:29,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 15:25:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-12 15:25:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-12 15:25:29,757 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-12 15:25:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:29,757 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-12 15:25:29,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:25:29,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-12 15:25:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-12 15:25:29,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:29,758 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:29,770 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:29,958 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:29,958 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:29,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-09-12 15:25:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:29,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126434880] [2024-09-12 15:25:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:25:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:25:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:25:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:25:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:25:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:25:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:25:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:25:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126434880] [2024-09-12 15:25:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126434880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209852506] [2024-09-12 15:25:30,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:30,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:30,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:30,530 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:30,532 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 15:25:30,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 15:25:30,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:30,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 15:25:30,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:30,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:31,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209852506] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:31,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:31,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-09-12 15:25:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359639123] [2024-09-12 15:25:31,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:31,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 15:25:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:31,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 15:25:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:25:31,078 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:31,205 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-12 15:25:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 15:25:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 132 [2024-09-12 15:25:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:31,207 INFO L225 Difference]: With dead ends: 192 [2024-09-12 15:25:31,207 INFO L226 Difference]: Without dead ends: 136 [2024-09-12 15:25:31,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:25:31,208 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:31,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-12 15:25:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-12 15:25:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-12 15:25:31,214 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-12 15:25:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:31,215 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-12 15:25:31,215 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:31,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-12 15:25:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-12 15:25:31,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:31,215 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:31,227 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:31,419 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 15:25:31,419 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:31,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-09-12 15:25:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:31,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188015234] [2024-09-12 15:25:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:25:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:25:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:25:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:25:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:25:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:25:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:25:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:31,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188015234] [2024-09-12 15:25:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188015234] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560253667] [2024-09-12 15:25:31,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:31,722 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:31,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 15:25:31,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-12 15:25:31,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:31,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 15:25:31,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:31,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:25:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560253667] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:32,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:32,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-12 15:25:32,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273563690] [2024-09-12 15:25:32,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:32,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 15:25:32,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:32,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 15:25:32,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:25:32,180 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:32,279 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-12 15:25:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 15:25:32,279 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-12 15:25:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:32,280 INFO L225 Difference]: With dead ends: 149 [2024-09-12 15:25:32,280 INFO L226 Difference]: Without dead ends: 147 [2024-09-12 15:25:32,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-12 15:25:32,281 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:32,281 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-12 15:25:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-12 15:25:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-12 15:25:32,288 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-12 15:25:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:32,289 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-12 15:25:32,289 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:32,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-12 15:25:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-12 15:25:32,290 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:32,290 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:32,302 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 15:25:32,490 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:32,490 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:32,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-09-12 15:25:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363548006] [2024-09-12 15:25:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:25:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:25:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:25:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:25:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:25:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:25:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:25:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:25:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363548006] [2024-09-12 15:25:33,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363548006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542307847] [2024-09-12 15:25:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:33,130 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:33,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 15:25:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:33,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 15:25:33,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:33,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542307847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:33,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:33,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-09-12 15:25:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56773715] [2024-09-12 15:25:33,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:33,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 15:25:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 15:25:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:25:33,677 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:33,892 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-12 15:25:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 15:25:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-09-12 15:25:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:33,893 INFO L225 Difference]: With dead ends: 203 [2024-09-12 15:25:33,893 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 15:25:33,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:25:33,894 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:33,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 15:25:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-12 15:25:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-12 15:25:33,912 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-12 15:25:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:33,912 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-12 15:25:33,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-12 15:25:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 15:25:33,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:33,913 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:33,925 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:34,113 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 15:25:34,113 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:34,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-09-12 15:25:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989323682] [2024-09-12 15:25:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:25:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:25:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:25:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:25:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:25:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:25:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:25:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:34,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:34,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989323682] [2024-09-12 15:25:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989323682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:34,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761104445] [2024-09-12 15:25:34,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:34,548 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 15:25:34,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:34,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:34,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 15:25:34,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:34,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:25:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761104445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:35,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-12 15:25:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563290520] [2024-09-12 15:25:35,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:35,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 15:25:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 15:25:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-12 15:25:35,134 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:35,242 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-12 15:25:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 15:25:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-12 15:25:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:35,244 INFO L225 Difference]: With dead ends: 157 [2024-09-12 15:25:35,244 INFO L226 Difference]: Without dead ends: 155 [2024-09-12 15:25:35,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:35,245 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:35,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-12 15:25:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-12 15:25:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-12 15:25:35,252 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-12 15:25:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:35,252 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-12 15:25:35,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:25:35,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-12 15:25:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-12 15:25:35,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:35,253 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:35,266 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:35,454 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 15:25:35,454 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:35,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-09-12 15:25:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184305464] [2024-09-12 15:25:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:25:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:25:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:25:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:25:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:25:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:25:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:25:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:25:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184305464] [2024-09-12 15:25:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184305464] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512594936] [2024-09-12 15:25:35,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:35,992 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:35,993 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 15:25:36,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 15:25:36,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:36,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 15:25:36,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:36,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512594936] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:36,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-09-12 15:25:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512434142] [2024-09-12 15:25:36,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:36,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 15:25:36,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 15:25:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:25:36,583 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:36,760 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-12 15:25:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 15:25:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 148 [2024-09-12 15:25:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:36,762 INFO L225 Difference]: With dead ends: 214 [2024-09-12 15:25:36,762 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 15:25:36,763 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:25:36,763 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:36,764 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 15:25:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-12 15:25:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-12 15:25:36,773 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-12 15:25:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:36,773 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-12 15:25:36,773 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:36,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-12 15:25:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-12 15:25:36,774 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:36,774 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:36,790 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-12 15:25:36,978 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 15:25:36,978 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:36,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-09-12 15:25:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:36,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164458806] [2024-09-12 15:25:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:25:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:25:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:25:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:25:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:25:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:25:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:25:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:25:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:25:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:25:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:25:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:25:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:25:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:25:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:25:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164458806] [2024-09-12 15:25:37,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164458806] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411564705] [2024-09-12 15:25:37,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:37,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:37,336 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:37,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 15:25:37,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:37,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:37,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 15:25:37,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:37,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:25:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411564705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:37,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:37,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-12 15:25:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613488190] [2024-09-12 15:25:37,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:37,855 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 15:25:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 15:25:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:37,856 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:37,961 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-12 15:25:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 15:25:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-12 15:25:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:37,963 INFO L225 Difference]: With dead ends: 165 [2024-09-12 15:25:37,963 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 15:25:37,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-12 15:25:37,964 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:37,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 15:25:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-12 15:25:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-12 15:25:37,972 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-12 15:25:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:37,972 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-12 15:25:37,972 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:37,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-12 15:25:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-12 15:25:37,973 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:37,973 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:37,985 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-12 15:25:38,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 15:25:38,178 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:38,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-09-12 15:25:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:38,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28882766] [2024-09-12 15:25:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:38,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:25:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:25:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:25:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:25:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:25:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:25:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:25:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:25:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:25:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:25:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:25:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:25:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:25:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:25:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:25:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:25:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:38,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:38,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28882766] [2024-09-12 15:25:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28882766] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:38,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687768820] [2024-09-12 15:25:38,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:38,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:38,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:38,740 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:38,742 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 15:25:38,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 15:25:38,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:38,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 15:25:38,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:38,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687768820] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:39,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-09-12 15:25:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193146877] [2024-09-12 15:25:39,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:39,359 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 15:25:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 15:25:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:25:39,360 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:39,548 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-12 15:25:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 15:25:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-09-12 15:25:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:39,550 INFO L225 Difference]: With dead ends: 225 [2024-09-12 15:25:39,550 INFO L226 Difference]: Without dead ends: 160 [2024-09-12 15:25:39,550 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:25:39,551 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:39,551 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-12 15:25:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-12 15:25:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-12 15:25:39,559 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-12 15:25:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:39,559 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-12 15:25:39,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:39,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-12 15:25:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-12 15:25:39,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:39,560 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:39,574 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-12 15:25:39,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 15:25:39,764 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:39,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-09-12 15:25:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:39,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727787792] [2024-09-12 15:25:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:25:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:25:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:25:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:25:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:25:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:25:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:25:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:25:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:25:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:25:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:25:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:25:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:25:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:25:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:25:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:40,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727787792] [2024-09-12 15:25:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727787792] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451815807] [2024-09-12 15:25:40,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:40,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:40,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:40,147 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:40,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 15:25:40,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 15:25:40,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:40,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 15:25:40,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:40,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:25:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451815807] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:40,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-12 15:25:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675309492] [2024-09-12 15:25:40,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:40,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 15:25:40,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 15:25:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-12 15:25:40,616 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:40,733 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-12 15:25:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 15:25:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-12 15:25:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:40,734 INFO L225 Difference]: With dead ends: 173 [2024-09-12 15:25:40,734 INFO L226 Difference]: Without dead ends: 171 [2024-09-12 15:25:40,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:25:40,735 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:40,735 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-12 15:25:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-12 15:25:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-12 15:25:40,743 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-12 15:25:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:40,744 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-12 15:25:40,744 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:25:40,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-12 15:25:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-12 15:25:40,745 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:40,745 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:40,757 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:40,948 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 15:25:40,949 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-09-12 15:25:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121107179] [2024-09-12 15:25:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:25:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:25:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:25:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:25:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:25:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:25:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:25:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:25:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:25:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:25:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:25:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:25:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:25:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:25:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:25:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:25:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121107179] [2024-09-12 15:25:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121107179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035378849] [2024-09-12 15:25:41,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:41,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:41,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:41,603 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:41,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 15:25:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:41,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 15:25:41,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:41,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035378849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:42,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-09-12 15:25:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299159974] [2024-09-12 15:25:42,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:42,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 15:25:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 15:25:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:25:42,271 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:42,438 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-12 15:25:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 15:25:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 164 [2024-09-12 15:25:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:42,440 INFO L225 Difference]: With dead ends: 236 [2024-09-12 15:25:42,440 INFO L226 Difference]: Without dead ends: 168 [2024-09-12 15:25:42,440 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:25:42,441 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:42,441 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-12 15:25:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-12 15:25:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-12 15:25:42,461 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-12 15:25:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:42,461 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-12 15:25:42,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:42,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-12 15:25:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-12 15:25:42,462 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:42,462 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:42,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-12 15:25:42,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 15:25:42,667 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:42,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-09-12 15:25:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:42,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229724967] [2024-09-12 15:25:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:25:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:25:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:25:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:25:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:25:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:25:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:25:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:25:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:25:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:25:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:25:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:25:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:25:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:25:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:25:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229724967] [2024-09-12 15:25:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229724967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655880416] [2024-09-12 15:25:43,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:43,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:43,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:43,086 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:43,088 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 15:25:43,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:43,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:43,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 15:25:43,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:43,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:25:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655880416] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:43,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-12 15:25:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691480506] [2024-09-12 15:25:43,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:43,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 15:25:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 15:25:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:25:43,655 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:43,764 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-12 15:25:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 15:25:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-12 15:25:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:43,765 INFO L225 Difference]: With dead ends: 181 [2024-09-12 15:25:43,765 INFO L226 Difference]: Without dead ends: 179 [2024-09-12 15:25:43,766 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:25:43,766 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:43,766 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-12 15:25:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-12 15:25:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-12 15:25:43,775 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-12 15:25:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:43,775 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-12 15:25:43,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:43,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-12 15:25:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-12 15:25:43,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:43,776 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:43,792 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-12 15:25:43,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:43,980 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-09-12 15:25:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620636798] [2024-09-12 15:25:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:25:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:25:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:25:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:25:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:25:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:25:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:25:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:25:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:25:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:25:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:25:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:25:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:25:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:25:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:25:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:25:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:44,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:44,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620636798] [2024-09-12 15:25:44,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620636798] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:44,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080773052] [2024-09-12 15:25:44,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:44,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:44,670 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:44,672 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 15:25:44,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-12 15:25:44,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:44,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 15:25:44,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:44,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080773052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:45,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:45,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-09-12 15:25:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319675025] [2024-09-12 15:25:45,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:45,344 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 15:25:45,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 15:25:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:25:45,345 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:45,542 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-12 15:25:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 15:25:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-09-12 15:25:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:45,544 INFO L225 Difference]: With dead ends: 247 [2024-09-12 15:25:45,544 INFO L226 Difference]: Without dead ends: 176 [2024-09-12 15:25:45,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:25:45,545 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:45,546 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-12 15:25:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-12 15:25:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-12 15:25:45,559 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-12 15:25:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:45,559 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-12 15:25:45,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:45,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-12 15:25:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-12 15:25:45,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:45,560 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:45,583 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:45,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-12 15:25:45,764 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:45,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-09-12 15:25:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310162397] [2024-09-12 15:25:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:25:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:25:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:25:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:25:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:25:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:25:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:25:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:25:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:25:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:25:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:25:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:25:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:25:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:25:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:25:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310162397] [2024-09-12 15:25:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310162397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832679018] [2024-09-12 15:25:46,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:46,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:46,274 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:46,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-12 15:25:46,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:46,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:46,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 15:25:46,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:46,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:25:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832679018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:46,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-12 15:25:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549574463] [2024-09-12 15:25:46,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:46,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 15:25:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 15:25:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:25:46,852 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:46,975 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-12 15:25:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 15:25:46,976 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-12 15:25:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:46,977 INFO L225 Difference]: With dead ends: 189 [2024-09-12 15:25:46,977 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 15:25:46,978 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:25:46,978 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:46,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 15:25:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-12 15:25:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-12 15:25:46,988 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-12 15:25:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:46,989 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-12 15:25:46,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:25:46,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-12 15:25:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-12 15:25:46,990 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:46,990 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:47,002 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:47,193 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,193 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:47,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-09-12 15:25:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817391189] [2024-09-12 15:25:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:25:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:25:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:25:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:25:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:25:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:25:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:25:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:25:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:25:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:25:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:25:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:25:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:25:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:25:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:25:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:25:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817391189] [2024-09-12 15:25:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817391189] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771584297] [2024-09-12 15:25:47,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:47,949 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:47,954 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-12 15:25:48,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-12 15:25:48,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:48,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 15:25:48,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:48,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:48,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771584297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:48,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:48,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-09-12 15:25:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161224547] [2024-09-12 15:25:48,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:48,729 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 15:25:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 15:25:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:25:48,730 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:48,949 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-12 15:25:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 15:25:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 180 [2024-09-12 15:25:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:48,950 INFO L225 Difference]: With dead ends: 258 [2024-09-12 15:25:48,950 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 15:25:48,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:25:48,951 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:48,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 15:25:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-12 15:25:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-12 15:25:48,961 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-12 15:25:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:48,961 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-12 15:25:48,961 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:48,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-12 15:25:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-12 15:25:48,962 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:48,962 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:48,975 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:49,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:49,163 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:49,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-09-12 15:25:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:49,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110804195] [2024-09-12 15:25:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:25:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:25:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:25:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:25:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:25:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:25:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:25:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:25:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:25:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:25:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:25:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:25:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:25:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:25:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:25:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110804195] [2024-09-12 15:25:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110804195] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915692935] [2024-09-12 15:25:49,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:49,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:49,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:49,622 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:49,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-12 15:25:49,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-12 15:25:49,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:49,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 15:25:49,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:49,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:25:50,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915692935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:50,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:50,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-12 15:25:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611175043] [2024-09-12 15:25:50,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:50,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 15:25:50,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 15:25:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:25:50,218 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:50,316 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-12 15:25:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 15:25:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-12 15:25:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:50,318 INFO L225 Difference]: With dead ends: 197 [2024-09-12 15:25:50,318 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 15:25:50,318 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-12 15:25:50,319 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:50,319 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 15:25:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-12 15:25:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-12 15:25:50,330 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-12 15:25:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:50,330 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-12 15:25:50,330 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:50,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-12 15:25:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-12 15:25:50,331 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:50,331 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:50,343 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:50,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-12 15:25:50,536 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:50,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-09-12 15:25:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827882116] [2024-09-12 15:25:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:25:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:25:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:25:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:25:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:25:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:25:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:25:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:25:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:25:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:25:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:25:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:25:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:25:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:25:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:25:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:25:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:51,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:51,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827882116] [2024-09-12 15:25:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827882116] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:51,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471859347] [2024-09-12 15:25:51,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:51,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:51,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:51,257 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:51,259 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-12 15:25:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 15:25:51,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:51,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:52,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471859347] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:52,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:52,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-09-12 15:25:52,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114719860] [2024-09-12 15:25:52,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:52,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 15:25:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 15:25:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:25:52,031 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:52,247 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-12 15:25:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 15:25:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-09-12 15:25:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:52,249 INFO L225 Difference]: With dead ends: 269 [2024-09-12 15:25:52,249 INFO L226 Difference]: Without dead ends: 192 [2024-09-12 15:25:52,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:25:52,250 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:52,250 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-12 15:25:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-12 15:25:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-12 15:25:52,260 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-12 15:25:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:52,260 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-12 15:25:52,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:52,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-12 15:25:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-12 15:25:52,261 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:52,261 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:52,276 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:52,465 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-12 15:25:52,466 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:52,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-09-12 15:25:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:52,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615836119] [2024-09-12 15:25:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:52,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:25:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:25:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:25:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:25:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:25:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:25:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:25:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:25:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:25:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:25:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:25:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:25:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:25:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:25:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:25:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615836119] [2024-09-12 15:25:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615836119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383712606] [2024-09-12 15:25:53,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:53,025 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:53,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-12 15:25:53,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:53,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:53,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 15:25:53,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:53,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:25:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383712606] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:53,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-12 15:25:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694861784] [2024-09-12 15:25:53,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:53,743 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 15:25:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 15:25:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-12 15:25:53,743 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:53,882 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-12 15:25:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 15:25:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-12 15:25:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:53,884 INFO L225 Difference]: With dead ends: 205 [2024-09-12 15:25:53,884 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 15:25:53,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:53,884 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:53,885 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 15:25:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-12 15:25:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:25:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-12 15:25:53,895 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-12 15:25:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:53,895 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-12 15:25:53,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:25:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-12 15:25:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-12 15:25:53,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:53,896 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:53,909 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:54,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:54,097 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:54,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-09-12 15:25:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058392064] [2024-09-12 15:25:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:25:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:25:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:25:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:25:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:25:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:25:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:25:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:25:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:25:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:25:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:25:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:25:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:25:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:25:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:25:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:25:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058392064] [2024-09-12 15:25:54,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058392064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873691892] [2024-09-12 15:25:54,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:54,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:54,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:54,978 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-12 15:25:55,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-12 15:25:55,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:55,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 15:25:55,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:55,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873691892] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:55,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:55,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-09-12 15:25:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084031645] [2024-09-12 15:25:55,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:55,885 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 15:25:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 15:25:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:25:55,886 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:56,121 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-12 15:25:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 15:25:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 196 [2024-09-12 15:25:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:56,123 INFO L225 Difference]: With dead ends: 280 [2024-09-12 15:25:56,123 INFO L226 Difference]: Without dead ends: 200 [2024-09-12 15:25:56,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:25:56,123 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:56,124 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:25:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-12 15:25:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-12 15:25:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:25:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-12 15:25:56,149 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-12 15:25:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:56,153 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-12 15:25:56,153 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-12 15:25:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-12 15:25:56,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:56,154 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:56,166 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-12 15:25:56,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:56,355 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:56,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-09-12 15:25:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414593738] [2024-09-12 15:25:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:25:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:25:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:25:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:25:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:25:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:25:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:25:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:25:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:25:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:25:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:25:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:25:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:25:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:25:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:25:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:56,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414593738] [2024-09-12 15:25:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414593738] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431580669] [2024-09-12 15:25:56,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:56,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:56,923 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:56,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-12 15:25:57,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:57,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:57,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 15:25:57,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:57,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:25:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431580669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:57,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-12 15:25:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114991694] [2024-09-12 15:25:57,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:57,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 15:25:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 15:25:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:57,613 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:57,725 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-12 15:25:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 15:25:57,726 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-12 15:25:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:57,727 INFO L225 Difference]: With dead ends: 213 [2024-09-12 15:25:57,731 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 15:25:57,731 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 15:25:57,732 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:57,732 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 15:25:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-12 15:25:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:25:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-12 15:25:57,756 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-12 15:25:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:57,756 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-12 15:25:57,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:25:57,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-12 15:25:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-12 15:25:57,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:57,757 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:57,769 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-12 15:25:57,957 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-12 15:25:57,957 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:57,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-09-12 15:25:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682977604] [2024-09-12 15:25:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:25:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:25:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:25:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:25:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:25:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:25:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:25:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:25:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:25:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:25:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:25:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:25:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:25:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:25:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:25:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:25:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:25:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682977604] [2024-09-12 15:25:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682977604] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311394345] [2024-09-12 15:25:58,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:58,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:58,906 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:58,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-12 15:25:58,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-12 15:25:58,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:58,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-12 15:25:59,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:25:59,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:25:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311394345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:59,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:59,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-09-12 15:25:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319287535] [2024-09-12 15:25:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:59,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 15:25:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 15:25:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:25:59,885 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:00,095 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-12 15:26:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 15:26:00,095 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-09-12 15:26:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:00,096 INFO L225 Difference]: With dead ends: 291 [2024-09-12 15:26:00,096 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 15:26:00,097 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:26:00,097 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:00,097 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 15:26:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-12 15:26:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-12 15:26:00,109 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-12 15:26:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:00,109 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-12 15:26:00,109 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:00,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-12 15:26:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-12 15:26:00,110 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:00,110 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:00,126 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:00,310 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-12 15:26:00,311 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:00,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-09-12 15:26:00,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:00,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449740934] [2024-09-12 15:26:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449740934] [2024-09-12 15:26:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449740934] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292414170] [2024-09-12 15:26:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:00,894 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:00,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-12 15:26:00,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-12 15:26:00,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:00,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 15:26:00,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:01,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:01,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292414170] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:01,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-12 15:26:01,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207447722] [2024-09-12 15:26:01,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:01,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 15:26:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 15:26:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 15:26:01,683 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:01,805 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-12 15:26:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 15:26:01,805 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-12 15:26:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:01,806 INFO L225 Difference]: With dead ends: 221 [2024-09-12 15:26:01,806 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 15:26:01,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:26:01,807 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:01,807 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 15:26:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-12 15:26:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-12 15:26:01,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-12 15:26:01,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:01,834 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-12 15:26:01,834 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:01,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:01,834 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-12 15:26:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-12 15:26:01,835 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:01,835 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:01,851 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-09-12 15:26:02,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:02,036 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:02,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-09-12 15:26:02,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:02,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486206416] [2024-09-12 15:26:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:26:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486206416] [2024-09-12 15:26:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486206416] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055284507] [2024-09-12 15:26:02,935 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:02,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:02,936 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:02,938 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-12 15:26:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 15:26:03,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:03,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055284507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:03,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-09-12 15:26:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574207433] [2024-09-12 15:26:03,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:03,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 15:26:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 15:26:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:26:03,997 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:04,248 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-12 15:26:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 15:26:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 212 [2024-09-12 15:26:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:04,253 INFO L225 Difference]: With dead ends: 302 [2024-09-12 15:26:04,253 INFO L226 Difference]: Without dead ends: 216 [2024-09-12 15:26:04,254 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:26:04,255 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:04,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-12 15:26:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-12 15:26:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-12 15:26:04,284 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-12 15:26:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:04,284 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-12 15:26:04,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:04,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-12 15:26:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-12 15:26:04,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:04,285 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:04,308 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:04,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-12 15:26:04,487 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:04,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-09-12 15:26:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:04,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832968465] [2024-09-12 15:26:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832968465] [2024-09-12 15:26:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832968465] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928689851] [2024-09-12 15:26:05,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:05,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:05,211 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:05,213 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-12 15:26:05,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:05,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:05,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 15:26:05,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:05,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928689851] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:06,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:06,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-12 15:26:06,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381164110] [2024-09-12 15:26:06,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:06,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 15:26:06,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 15:26:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:26:06,052 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:06,170 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-12 15:26:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 15:26:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-12 15:26:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:06,172 INFO L225 Difference]: With dead ends: 229 [2024-09-12 15:26:06,172 INFO L226 Difference]: Without dead ends: 227 [2024-09-12 15:26:06,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:26:06,172 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:06,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-12 15:26:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-12 15:26:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-12 15:26:06,185 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-12 15:26:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:06,185 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-12 15:26:06,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:06,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-12 15:26:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-12 15:26:06,186 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:06,186 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:06,198 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:06,390 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:06,391 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:06,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-09-12 15:26:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282264385] [2024-09-12 15:26:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:26:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:07,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:07,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282264385] [2024-09-12 15:26:07,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282264385] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:07,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566822532] [2024-09-12 15:26:07,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:07,474 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:07,475 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-12 15:26:07,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-12 15:26:07,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:07,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 15:26:07,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:07,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566822532] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:08,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-09-12 15:26:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485858963] [2024-09-12 15:26:08,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:08,568 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 15:26:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 15:26:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 15:26:08,569 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:08,859 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-12 15:26:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-12 15:26:08,860 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-09-12 15:26:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:08,861 INFO L225 Difference]: With dead ends: 313 [2024-09-12 15:26:08,861 INFO L226 Difference]: Without dead ends: 224 [2024-09-12 15:26:08,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 15:26:08,863 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:08,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-12 15:26:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-12 15:26:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-12 15:26:08,877 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-12 15:26:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:08,877 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-12 15:26:08,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:08,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-12 15:26:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-12 15:26:08,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:08,878 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:08,890 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:09,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:09,078 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:09,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-09-12 15:26:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773996888] [2024-09-12 15:26:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:09,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773996888] [2024-09-12 15:26:09,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773996888] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605060198] [2024-09-12 15:26:09,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:09,768 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:09,770 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-12 15:26:09,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:09,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:09,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-12 15:26:09,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:09,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605060198] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:10,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:10,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-12 15:26:10,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602627574] [2024-09-12 15:26:10,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:10,503 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 15:26:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 15:26:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:26:10,504 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:10,640 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-12 15:26:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 15:26:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-12 15:26:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:10,642 INFO L225 Difference]: With dead ends: 237 [2024-09-12 15:26:10,642 INFO L226 Difference]: Without dead ends: 235 [2024-09-12 15:26:10,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:26:10,644 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:10,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-12 15:26:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-12 15:26:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-12 15:26:10,661 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-12 15:26:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:10,661 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-12 15:26:10,661 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:10,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-12 15:26:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-12 15:26:10,662 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:10,662 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:10,678 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:10,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-12 15:26:10,867 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:10,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-09-12 15:26:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:10,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918781125] [2024-09-12 15:26:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:26:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918781125] [2024-09-12 15:26:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918781125] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186754317] [2024-09-12 15:26:12,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:12,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:12,057 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:12,058 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-12 15:26:12,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-12 15:26:12,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:12,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-12 15:26:12,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:12,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:13,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186754317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:13,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:13,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-09-12 15:26:13,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114369107] [2024-09-12 15:26:13,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:13,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 15:26:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:13,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 15:26:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 15:26:13,272 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:13,511 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-12 15:26:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-12 15:26:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 228 [2024-09-12 15:26:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:13,513 INFO L225 Difference]: With dead ends: 324 [2024-09-12 15:26:13,513 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 15:26:13,514 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 15:26:13,514 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:13,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 15:26:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 15:26:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-12 15:26:13,528 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-12 15:26:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:13,528 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-12 15:26:13,529 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:13,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:13,529 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-12 15:26:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-12 15:26:13,530 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:13,530 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:13,542 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-12 15:26:13,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:13,734 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-09-12 15:26:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57768564] [2024-09-12 15:26:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57768564] [2024-09-12 15:26:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57768564] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24716863] [2024-09-12 15:26:14,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:14,452 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:14,453 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-12 15:26:14,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-12 15:26:14,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:14,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 15:26:14,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:14,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:15,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24716863] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:15,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:15,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-12 15:26:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887134819] [2024-09-12 15:26:15,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:15,399 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 15:26:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 15:26:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:26:15,400 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:15,558 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-12 15:26:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 15:26:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-12 15:26:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:15,560 INFO L225 Difference]: With dead ends: 245 [2024-09-12 15:26:15,560 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 15:26:15,560 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 15:26:15,561 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:15,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 15:26:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-12 15:26:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-12 15:26:15,574 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-12 15:26:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:15,574 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-12 15:26:15,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:15,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-12 15:26:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-12 15:26:15,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:15,575 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:15,588 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:15,779 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:15,779 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:15,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-09-12 15:26:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:15,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108424239] [2024-09-12 15:26:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:26:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:17,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108424239] [2024-09-12 15:26:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108424239] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899455727] [2024-09-12 15:26:17,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:17,029 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:17,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-12 15:26:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-12 15:26:17,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:17,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899455727] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:18,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-09-12 15:26:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988179746] [2024-09-12 15:26:18,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:18,330 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 15:26:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 15:26:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 15:26:18,331 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:18,623 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-12 15:26:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-12 15:26:18,624 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-09-12 15:26:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:18,625 INFO L225 Difference]: With dead ends: 335 [2024-09-12 15:26:18,625 INFO L226 Difference]: Without dead ends: 240 [2024-09-12 15:26:18,626 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 15:26:18,626 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:18,627 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-12 15:26:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-12 15:26:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-12 15:26:18,641 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-12 15:26:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:18,641 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-12 15:26:18,641 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:18,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-12 15:26:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-12 15:26:18,642 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:18,642 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:18,655 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:18,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-12 15:26:18,848 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:18,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-09-12 15:26:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:18,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842666902] [2024-09-12 15:26:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:26:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:26:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:26:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:26:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:26:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:26:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:26:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:26:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:26:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:26:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:26:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:26:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:26:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:26:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:26:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:26:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842666902] [2024-09-12 15:26:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842666902] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694268312] [2024-09-12 15:26:19,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:19,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:19,606 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:19,607 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-12 15:26:19,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:19,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:19,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-12 15:26:19,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:19,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694268312] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:20,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-12 15:26:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39214131] [2024-09-12 15:26:20,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:20,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 15:26:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 15:26:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 15:26:20,608 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:20,782 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-12 15:26:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 15:26:20,782 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-12 15:26:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:20,784 INFO L225 Difference]: With dead ends: 253 [2024-09-12 15:26:20,784 INFO L226 Difference]: Without dead ends: 251 [2024-09-12 15:26:20,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:26:20,784 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:20,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-12 15:26:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-12 15:26:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-12 15:26:20,798 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-12 15:26:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:20,799 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-12 15:26:20,799 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:20,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-12 15:26:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-12 15:26:20,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:20,800 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:20,814 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:21,000 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-12 15:26:21,001 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-09-12 15:26:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123675300] [2024-09-12 15:26:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:26:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:26:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:26:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:26:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:26:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:26:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:26:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:26:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:26:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:26:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:26:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:26:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:26:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:26:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:26:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:26:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:26:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123675300] [2024-09-12 15:26:22,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123675300] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078071335] [2024-09-12 15:26:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:22,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:22,154 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:22,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-12 15:26:22,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-12 15:26:22,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:22,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 15:26:22,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:22,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078071335] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-09-12 15:26:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333363753] [2024-09-12 15:26:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:23,278 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 15:26:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 15:26:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 15:26:23,279 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:23,536 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-12 15:26:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 15:26:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 244 [2024-09-12 15:26:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:23,538 INFO L225 Difference]: With dead ends: 346 [2024-09-12 15:26:23,538 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 15:26:23,539 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 15:26:23,540 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:23,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 15:26:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-12 15:26:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-12 15:26:23,570 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-12 15:26:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:23,570 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-12 15:26:23,570 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:23,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-12 15:26:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-12 15:26:23,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:23,571 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:23,584 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-12 15:26:23,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-12 15:26:23,775 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:23,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-09-12 15:26:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445522298] [2024-09-12 15:26:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:26:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:26:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:26:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:26:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:26:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:26:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:26:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:26:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:26:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:26:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:26:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:26:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:26:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:26:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:26:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:26:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:24,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:24,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445522298] [2024-09-12 15:26:24,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445522298] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:24,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055506871] [2024-09-12 15:26:24,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:24,598 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:24,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-12 15:26:24,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:24,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:24,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 15:26:24,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:24,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:26:25,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055506871] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:25,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:25,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-12 15:26:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685414545] [2024-09-12 15:26:25,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:25,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 15:26:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 15:26:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:26:25,603 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:25,782 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-12 15:26:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-12 15:26:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-12 15:26:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:25,784 INFO L225 Difference]: With dead ends: 261 [2024-09-12 15:26:25,784 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 15:26:25,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 15:26:25,785 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:25,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 15:26:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-12 15:26:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-12 15:26:25,799 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-12 15:26:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:25,799 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-12 15:26:25,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:25,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-12 15:26:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-12 15:26:25,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:25,801 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:25,813 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:26,004 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:26,005 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:26,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-09-12 15:26:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833149243] [2024-09-12 15:26:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:26:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:26:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:26:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:26:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:26:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:26:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:26:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:26:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:26:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:26:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:26:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:26:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:26:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:26:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:26:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:26:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:26:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:27,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833149243] [2024-09-12 15:26:27,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833149243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656372775] [2024-09-12 15:26:27,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:27,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:27,432 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:27,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-12 15:26:27,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-12 15:26:27,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:27,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 15:26:27,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:27,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656372775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:28,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-09-12 15:26:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391848460] [2024-09-12 15:26:28,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:28,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 15:26:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 15:26:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 15:26:28,840 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:29,150 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-12 15:26:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-12 15:26:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-09-12 15:26:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:29,152 INFO L225 Difference]: With dead ends: 357 [2024-09-12 15:26:29,152 INFO L226 Difference]: Without dead ends: 256 [2024-09-12 15:26:29,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 15:26:29,153 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:29,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:26:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-12 15:26:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-12 15:26:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-12 15:26:29,168 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-12 15:26:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:29,169 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-12 15:26:29,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:29,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-12 15:26:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-12 15:26:29,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:29,170 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:29,183 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:29,374 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-12 15:26:29,375 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:29,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-09-12 15:26:29,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:29,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137731065] [2024-09-12 15:26:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:29,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:26:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:26:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:26:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:26:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:26:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:26:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:26:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:26:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:26:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:26:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:26:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:26:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:26:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:26:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:26:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:26:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137731065] [2024-09-12 15:26:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137731065] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035997188] [2024-09-12 15:26:30,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:30,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:30,250 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:30,251 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-12 15:26:30,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-12 15:26:30,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:30,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 15:26:30,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:30,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:26:31,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035997188] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:31,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:31,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-12 15:26:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200105475] [2024-09-12 15:26:31,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:31,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 15:26:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 15:26:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 15:26:31,338 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:31,514 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-12 15:26:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 15:26:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-12 15:26:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:31,516 INFO L225 Difference]: With dead ends: 269 [2024-09-12 15:26:31,516 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 15:26:31,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:26:31,516 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:31,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 15:26:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-12 15:26:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-12 15:26:31,531 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-12 15:26:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:31,532 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-12 15:26:31,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:26:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-12 15:26:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-12 15:26:31,533 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:31,533 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:31,546 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:31,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:31,734 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:31,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-09-12 15:26:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:31,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355477553] [2024-09-12 15:26:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:26:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:26:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:26:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:26:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:26:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:26:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:26:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:26:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:26:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:26:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:26:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:26:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:26:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:26:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:26:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:26:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:26:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355477553] [2024-09-12 15:26:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355477553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002103449] [2024-09-12 15:26:33,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:33,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:33,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:33,271 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-12 15:26:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:33,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 15:26:33,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:33,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002103449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:34,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:34,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-09-12 15:26:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181997566] [2024-09-12 15:26:34,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:34,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 15:26:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 15:26:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 15:26:34,690 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:35,086 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-12 15:26:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-12 15:26:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 260 [2024-09-12 15:26:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:35,087 INFO L225 Difference]: With dead ends: 368 [2024-09-12 15:26:35,088 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 15:26:35,088 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 15:26:35,088 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:35,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:26:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 15:26:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-12 15:26:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-12 15:26:35,105 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-12 15:26:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:35,105 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-12 15:26:35,105 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:35,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-12 15:26:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-12 15:26:35,106 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:35,106 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:35,119 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:35,307 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:35,307 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-09-12 15:26:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018085908] [2024-09-12 15:26:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:26:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:26:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:26:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:26:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:26:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:26:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:26:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:26:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018085908] [2024-09-12 15:26:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018085908] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475112207] [2024-09-12 15:26:36,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:36,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:36,218 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:36,219 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-12 15:26:36,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:36,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:36,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-12 15:26:36,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:36,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:26:37,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475112207] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:37,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:37,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-12 15:26:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341405667] [2024-09-12 15:26:37,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:37,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 15:26:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 15:26:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:26:37,397 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:37,572 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-12 15:26:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 15:26:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-12 15:26:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:37,574 INFO L225 Difference]: With dead ends: 277 [2024-09-12 15:26:37,574 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 15:26:37,575 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:26:37,575 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:37,575 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 15:26:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-12 15:26:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-12 15:26:37,591 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-12 15:26:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:37,591 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-12 15:26:37,591 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:37,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-12 15:26:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-12 15:26:37,592 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:37,593 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:37,605 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:37,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-12 15:26:37,794 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-09-12 15:26:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198333633] [2024-09-12 15:26:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:37,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:26:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:26:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:26:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:26:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:26:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:26:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:26:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:26:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:26:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198333633] [2024-09-12 15:26:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198333633] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257771756] [2024-09-12 15:26:39,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:39,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:39,215 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-12 15:26:39,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-12 15:26:39,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:39,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 15:26:39,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:39,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257771756] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:40,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-09-12 15:26:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030254590] [2024-09-12 15:26:40,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:40,759 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 15:26:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 15:26:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 15:26:40,760 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:41,241 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-12 15:26:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-12 15:26:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-09-12 15:26:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:41,243 INFO L225 Difference]: With dead ends: 379 [2024-09-12 15:26:41,243 INFO L226 Difference]: Without dead ends: 272 [2024-09-12 15:26:41,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 15:26:41,244 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:41,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:26:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-12 15:26:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-12 15:26:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-12 15:26:41,261 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-12 15:26:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:41,261 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-12 15:26:41,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:41,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-12 15:26:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-12 15:26:41,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:41,262 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:41,275 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:41,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:41,467 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:41,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-09-12 15:26:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375336865] [2024-09-12 15:26:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:26:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:26:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:26:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:26:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:26:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:26:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:26:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:26:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375336865] [2024-09-12 15:26:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375336865] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086109122] [2024-09-12 15:26:42,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:42,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:42,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:42,344 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:42,352 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-12 15:26:42,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:42,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:42,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 15:26:42,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:42,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:26:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086109122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:43,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:43,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-12 15:26:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473100195] [2024-09-12 15:26:43,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:43,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 15:26:43,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 15:26:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:26:43,685 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:43,864 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-12 15:26:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 15:26:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-12 15:26:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:43,866 INFO L225 Difference]: With dead ends: 285 [2024-09-12 15:26:43,866 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 15:26:43,866 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:26:43,867 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:43,867 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 15:26:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-12 15:26:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-12 15:26:43,885 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-12 15:26:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:43,885 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-12 15:26:43,885 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:26:43,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-12 15:26:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-12 15:26:43,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:43,886 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:43,901 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:44,090 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:44,090 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:44,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-09-12 15:26:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917228783] [2024-09-12 15:26:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:26:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:26:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:26:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:26:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:26:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:26:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:26:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:26:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:26:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:45,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917228783] [2024-09-12 15:26:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917228783] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037255110] [2024-09-12 15:26:45,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:45,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:45,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:45,841 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:45,842 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-12 15:26:45,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-12 15:26:45,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:45,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-12 15:26:45,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:46,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037255110] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:47,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-09-12 15:26:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792477997] [2024-09-12 15:26:47,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:47,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 15:26:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 15:26:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 15:26:47,445 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:47,806 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-12 15:26:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-12 15:26:47,807 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 276 [2024-09-12 15:26:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:47,809 INFO L225 Difference]: With dead ends: 390 [2024-09-12 15:26:47,809 INFO L226 Difference]: Without dead ends: 280 [2024-09-12 15:26:47,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 15:26:47,810 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:47,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:26:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-12 15:26:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-12 15:26:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-12 15:26:47,828 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-12 15:26:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:47,828 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-12 15:26:47,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:47,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-12 15:26:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-12 15:26:47,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:47,829 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:47,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-12 15:26:48,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-12 15:26:48,030 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:48,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-09-12 15:26:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983346384] [2024-09-12 15:26:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:26:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:26:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:26:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:26:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:26:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:26:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:26:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:26:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:49,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983346384] [2024-09-12 15:26:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983346384] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502167383] [2024-09-12 15:26:49,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:49,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:49,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:49,149 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:49,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-12 15:26:49,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-12 15:26:49,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:49,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 15:26:49,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:49,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:26:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502167383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:50,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:50,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-12 15:26:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769175961] [2024-09-12 15:26:50,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:50,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 15:26:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 15:26:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:26:50,515 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:50,696 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-12 15:26:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 15:26:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-12 15:26:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:50,698 INFO L225 Difference]: With dead ends: 293 [2024-09-12 15:26:50,698 INFO L226 Difference]: Without dead ends: 291 [2024-09-12 15:26:50,699 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 15:26:50,699 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:50,699 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-12 15:26:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-12 15:26:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:26:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-12 15:26:50,716 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-12 15:26:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:50,717 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-12 15:26:50,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:50,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-12 15:26:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-12 15:26:50,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:50,718 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:50,731 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:50,922 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-12 15:26:50,922 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:50,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-09-12 15:26:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672517303] [2024-09-12 15:26:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:26:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:26:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:26:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:26:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:26:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:26:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:26:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:26:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:26:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672517303] [2024-09-12 15:26:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672517303] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157549854] [2024-09-12 15:26:52,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:52,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:52,799 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:52,800 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-12 15:26:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 15:26:52,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:53,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157549854] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:54,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:54,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-09-12 15:26:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677625759] [2024-09-12 15:26:54,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:54,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 15:26:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 15:26:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 15:26:54,228 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:54,538 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-12 15:26:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-12 15:26:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 284 [2024-09-12 15:26:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:54,539 INFO L225 Difference]: With dead ends: 401 [2024-09-12 15:26:54,540 INFO L226 Difference]: Without dead ends: 288 [2024-09-12 15:26:54,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 15:26:54,540 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:54,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-12 15:26:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-12 15:26:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:26:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-12 15:26:54,558 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-12 15:26:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:54,558 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-12 15:26:54,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:54,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-12 15:26:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-12 15:26:54,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:54,560 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:54,575 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:54,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-12 15:26:54,761 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:54,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-09-12 15:26:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821081633] [2024-09-12 15:26:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:26:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:26:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:26:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:26:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:26:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:26:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:26:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:26:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:55,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821081633] [2024-09-12 15:26:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821081633] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740930791] [2024-09-12 15:26:55,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:55,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:55,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:55,787 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:55,789 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-12 15:26:55,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:55,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:55,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-12 15:26:55,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:56,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:26:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740930791] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:56,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-12 15:26:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998829782] [2024-09-12 15:26:56,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:56,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 15:26:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 15:26:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 15:26:56,905 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:57,068 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-12 15:26:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 15:26:57,068 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-12 15:26:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:57,070 INFO L225 Difference]: With dead ends: 301 [2024-09-12 15:26:57,070 INFO L226 Difference]: Without dead ends: 299 [2024-09-12 15:26:57,070 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:26:57,070 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:57,070 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-12 15:26:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-12 15:26:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:26:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-12 15:26:57,088 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-12 15:26:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:57,088 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-12 15:26:57,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:26:57,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-12 15:26:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-12 15:26:57,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:57,090 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:57,103 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-12 15:26:57,293 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:57,293 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:57,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-09-12 15:26:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335756083] [2024-09-12 15:26:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:57,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:26:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:26:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:26:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:26:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:26:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:26:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:26:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:26:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:26:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:26:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335756083] [2024-09-12 15:26:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335756083] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560880118] [2024-09-12 15:26:59,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:59,273 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:59,274 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-12 15:26:59,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-12 15:26:59,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:59,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 15:26:59,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:26:59,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560880118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:01,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-09-12 15:27:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945565329] [2024-09-12 15:27:01,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:01,075 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 15:27:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 15:27:01,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 15:27:01,076 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:01,516 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-12 15:27:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-12 15:27:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 292 [2024-09-12 15:27:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:01,518 INFO L225 Difference]: With dead ends: 412 [2024-09-12 15:27:01,518 INFO L226 Difference]: Without dead ends: 296 [2024-09-12 15:27:01,518 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 15:27:01,519 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:01,519 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-12 15:27:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-12 15:27:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-12 15:27:01,547 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-12 15:27:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:01,547 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-12 15:27:01,548 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:01,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-12 15:27:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-12 15:27:01,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:01,552 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:01,576 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:01,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:01,753 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:01,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-09-12 15:27:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:01,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206698404] [2024-09-12 15:27:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:27:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:27:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:27:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:27:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:27:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:27:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:27:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:27:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206698404] [2024-09-12 15:27:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206698404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032333408] [2024-09-12 15:27:02,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:02,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:02,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:02,953 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:02,953 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-12 15:27:03,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:03,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:03,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 15:27:03,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:03,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032333408] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:04,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:04,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-12 15:27:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673636624] [2024-09-12 15:27:04,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:04,174 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 15:27:04,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 15:27:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:27:04,175 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:04,377 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-12 15:27:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 15:27:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-12 15:27:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:04,379 INFO L225 Difference]: With dead ends: 309 [2024-09-12 15:27:04,379 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 15:27:04,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 15:27:04,380 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:04,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 15:27:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-12 15:27:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-12 15:27:04,399 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-12 15:27:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:04,400 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-12 15:27:04,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:04,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-12 15:27:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-12 15:27:04,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:04,401 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:04,413 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-09-12 15:27:04,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:04,606 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:04,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-09-12 15:27:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:04,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599429193] [2024-09-12 15:27:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:27:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:27:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:27:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:27:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:27:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:27:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:27:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:27:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:27:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:06,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599429193] [2024-09-12 15:27:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599429193] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:06,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879517877] [2024-09-12 15:27:06,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:06,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:06,377 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-12 15:27:06,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-12 15:27:06,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:06,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-12 15:27:06,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:06,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879517877] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:08,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-09-12 15:27:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856754018] [2024-09-12 15:27:08,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:08,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 15:27:08,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 15:27:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 15:27:08,147 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:08,575 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-12 15:27:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-12 15:27:08,575 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-09-12 15:27:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:08,577 INFO L225 Difference]: With dead ends: 423 [2024-09-12 15:27:08,577 INFO L226 Difference]: Without dead ends: 304 [2024-09-12 15:27:08,578 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 15:27:08,582 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:08,582 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-12 15:27:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-12 15:27:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-12 15:27:08,626 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-12 15:27:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:08,626 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-12 15:27:08,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:08,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-12 15:27:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-12 15:27:08,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:08,628 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:08,656 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:08,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:08,828 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:08,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-09-12 15:27:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:08,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29973392] [2024-09-12 15:27:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:08,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:27:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:27:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:27:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:27:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:27:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:27:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:27:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:27:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:27:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:27:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:27:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:27:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:27:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:27:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:27:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:27:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:27:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:27:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:27:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:27:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:27:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:27:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:27:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:27:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:27:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:27:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:27:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:27:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:27:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:27:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:27:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:27:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:27:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:27:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:27:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:27:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29973392] [2024-09-12 15:27:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29973392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022045770] [2024-09-12 15:27:09,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:27:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:09,912 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:09,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-12 15:27:10,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-12 15:27:10,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:10,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 15:27:10,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:10,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022045770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:11,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-12 15:27:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027718049] [2024-09-12 15:27:11,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:11,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 15:27:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 15:27:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 15:27:11,108 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:11,279 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-12 15:27:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 15:27:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-12 15:27:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:11,281 INFO L225 Difference]: With dead ends: 317 [2024-09-12 15:27:11,281 INFO L226 Difference]: Without dead ends: 315 [2024-09-12 15:27:11,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:27:11,290 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:11,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-12 15:27:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-12 15:27:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-12 15:27:11,310 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-12 15:27:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:11,310 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-12 15:27:11,310 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:11,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-12 15:27:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-12 15:27:11,311 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:11,311 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:11,325 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:11,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:11,515 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:11,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-09-12 15:27:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829425341] [2024-09-12 15:27:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:27:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:27:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:27:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:27:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:27:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:27:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:27:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:27:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:27:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:27:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:27:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:27:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:27:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:27:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:27:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:27:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:27:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:27:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:27:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:27:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:27:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:27:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:27:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:27:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:27:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:27:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:27:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:27:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:27:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:27:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:27:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:27:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:27:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:27:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:27:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:27:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:27:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:13,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:13,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829425341] [2024-09-12 15:27:13,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829425341] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:13,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321685222] [2024-09-12 15:27:13,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:27:13,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:13,453 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:13,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-12 15:27:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:13,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 15:27:13,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:13,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321685222] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:15,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-09-12 15:27:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885362422] [2024-09-12 15:27:15,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:15,387 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 15:27:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 15:27:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 15:27:15,388 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:15,804 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-12 15:27:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-12 15:27:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 308 [2024-09-12 15:27:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:15,807 INFO L225 Difference]: With dead ends: 434 [2024-09-12 15:27:15,807 INFO L226 Difference]: Without dead ends: 312 [2024-09-12 15:27:15,808 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 15:27:15,808 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:15,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-12 15:27:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-12 15:27:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-12 15:27:15,830 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-12 15:27:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:15,830 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-12 15:27:15,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:15,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-12 15:27:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-12 15:27:15,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:15,832 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:15,845 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:16,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:16,037 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:16,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-09-12 15:27:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678967640] [2024-09-12 15:27:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:27:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:27:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:27:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:27:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:27:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:27:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:27:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:27:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:27:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:27:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:27:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:27:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:27:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:27:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:27:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:27:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:27:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:27:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:27:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:27:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:27:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:27:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:27:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:27:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:27:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:27:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:27:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:27:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:27:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:27:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:27:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:27:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:27:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:27:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:27:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:27:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:27:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:17,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678967640] [2024-09-12 15:27:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678967640] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623654049] [2024-09-12 15:27:17,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:27:17,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:17,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:17,337 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:17,340 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-12 15:27:17,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:27:17,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:17,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-12 15:27:17,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:17,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:27:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623654049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:18,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:18,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-12 15:27:18,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654666285] [2024-09-12 15:27:18,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:18,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 15:27:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 15:27:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:27:18,839 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:19,058 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-12 15:27:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 15:27:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-12 15:27:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:19,060 INFO L225 Difference]: With dead ends: 325 [2024-09-12 15:27:19,060 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 15:27:19,060 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:27:19,061 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:19,061 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 15:27:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-12 15:27:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-12 15:27:19,081 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-12 15:27:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:19,082 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-12 15:27:19,082 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:19,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-12 15:27:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-12 15:27:19,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:19,083 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:19,096 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:19,287 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:19,287 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:19,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-09-12 15:27:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028014492] [2024-09-12 15:27:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:27:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:27:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:27:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:27:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:27:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:27:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:27:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:27:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:27:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:27:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:27:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:27:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:27:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:27:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:27:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:27:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:27:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:27:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:27:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:27:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:27:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:27:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:27:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:27:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:27:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:27:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:27:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:27:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:27:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:27:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:27:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:27:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:27:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:27:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:27:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:27:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:27:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:27:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:21,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028014492] [2024-09-12 15:27:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028014492] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075513888] [2024-09-12 15:27:21,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:27:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:21,587 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:21,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-12 15:27:21,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-12 15:27:21,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:21,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 15:27:21,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:21,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075513888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:23,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-09-12 15:27:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841199680] [2024-09-12 15:27:23,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:23,673 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-12 15:27:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-12 15:27:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 15:27:23,674 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:24,062 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-12 15:27:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-12 15:27:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-09-12 15:27:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:24,065 INFO L225 Difference]: With dead ends: 445 [2024-09-12 15:27:24,065 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 15:27:24,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 15:27:24,066 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:24,066 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 15:27:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-12 15:27:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-12 15:27:24,087 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-12 15:27:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:24,087 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-12 15:27:24,087 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:24,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-12 15:27:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-12 15:27:24,088 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:24,088 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:24,101 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:24,292 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-12 15:27:24,292 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:24,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-09-12 15:27:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924093136] [2024-09-12 15:27:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:27:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:27:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:27:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:27:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:27:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:27:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:27:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:27:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:27:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:27:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:27:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:27:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:27:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:27:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:27:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:27:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:27:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:27:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:27:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:27:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:27:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:27:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:27:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:27:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:27:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:27:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:27:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:27:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:27:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:27:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:27:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:27:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:27:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:27:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:27:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:27:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924093136] [2024-09-12 15:27:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924093136] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176949232] [2024-09-12 15:27:25,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:25,753 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:25,754 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-12 15:27:25,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:25,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:25,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 15:27:25,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:26,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:27:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176949232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:27,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-12 15:27:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382828398] [2024-09-12 15:27:27,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:27,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 15:27:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 15:27:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:27:27,291 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:27,509 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-12 15:27:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 15:27:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-12 15:27:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:27,511 INFO L225 Difference]: With dead ends: 333 [2024-09-12 15:27:27,511 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 15:27:27,512 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:27:27,512 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:27,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 15:27:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-12 15:27:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-12 15:27:27,537 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-12 15:27:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:27,537 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-12 15:27:27,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:27,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-12 15:27:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-12 15:27:27,539 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:27,539 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:27,552 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:27,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-12 15:27:27,744 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:27,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-09-12 15:27:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488591397] [2024-09-12 15:27:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:27:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:27:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:27:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:27:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:27:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:27:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:27:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:27:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:27:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:27:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:27:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:27:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:27:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:27:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:27:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:27:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:27:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:27:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:27:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:27:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:27:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:27:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:27:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:27:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:27:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:27:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:27:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:27:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:27:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:27:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:27:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:27:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:27:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:27:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:27:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:27:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:27:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:27:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:27:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488591397] [2024-09-12 15:27:30,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488591397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779546095] [2024-09-12 15:27:30,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:30,142 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:30,146 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-12 15:27:30,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-12 15:27:30,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:30,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-12 15:27:30,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:30,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779546095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:31,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-09-12 15:27:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270111895] [2024-09-12 15:27:31,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:31,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 15:27:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 15:27:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 15:27:31,828 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:32,260 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-12 15:27:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-12 15:27:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 324 [2024-09-12 15:27:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:32,263 INFO L225 Difference]: With dead ends: 456 [2024-09-12 15:27:32,263 INFO L226 Difference]: Without dead ends: 328 [2024-09-12 15:27:32,263 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 15:27:32,264 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:32,264 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-12 15:27:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-12 15:27:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-12 15:27:32,289 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-12 15:27:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:32,290 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-12 15:27:32,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:32,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-12 15:27:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-12 15:27:32,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:32,291 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:32,304 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:32,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:32,495 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:32,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-09-12 15:27:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:32,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355484665] [2024-09-12 15:27:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:27:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:27:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:27:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:27:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:27:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:27:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:27:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:27:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:27:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:27:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:27:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:27:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:27:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:27:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:27:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:27:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:27:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:27:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:27:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:27:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:27:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:27:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:27:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:27:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:27:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:27:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:27:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:27:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:27:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:27:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:27:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:27:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:27:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:27:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:27:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:27:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:27:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:27:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:27:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355484665] [2024-09-12 15:27:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355484665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066918638] [2024-09-12 15:27:33,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:27:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:33,813 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:33,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-12 15:27:33,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-12 15:27:33,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:33,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 15:27:33,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:34,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:27:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066918638] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:35,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-12 15:27:35,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495510274] [2024-09-12 15:27:35,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:35,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 15:27:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 15:27:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:27:35,509 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:35,736 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-12 15:27:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 15:27:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-12 15:27:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:35,739 INFO L225 Difference]: With dead ends: 341 [2024-09-12 15:27:35,739 INFO L226 Difference]: Without dead ends: 339 [2024-09-12 15:27:35,739 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 15:27:35,739 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:35,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-12 15:27:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-12 15:27:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-12 15:27:35,762 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-12 15:27:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:35,763 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-12 15:27:35,763 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:27:35,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-12 15:27:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-12 15:27:35,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:35,764 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:35,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:35,967 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-09-12 15:27:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478620559] [2024-09-12 15:27:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:27:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:27:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:27:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:27:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:27:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:27:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:27:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:27:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:27:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:27:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:27:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:27:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:27:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:27:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:27:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:27:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:27:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:27:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:27:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:27:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:27:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:27:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:27:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:27:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:27:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:27:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:27:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:27:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:27:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:27:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:27:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:27:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:27:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:27:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:27:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:27:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:27:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:27:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:27:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:27:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478620559] [2024-09-12 15:27:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478620559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442560727] [2024-09-12 15:27:38,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:27:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:38,457 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:38,458 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-12 15:27:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 15:27:38,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:38,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:40,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442560727] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:40,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:40,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-09-12 15:27:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447197614] [2024-09-12 15:27:40,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:40,631 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 15:27:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 15:27:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 15:27:40,632 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:41,164 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-12 15:27:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-12 15:27:41,164 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-09-12 15:27:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:41,167 INFO L225 Difference]: With dead ends: 467 [2024-09-12 15:27:41,167 INFO L226 Difference]: Without dead ends: 336 [2024-09-12 15:27:41,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 15:27:41,168 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:41,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:27:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-12 15:27:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-12 15:27:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-12 15:27:41,192 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-12 15:27:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:41,192 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-12 15:27:41,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:41,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-12 15:27:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-12 15:27:41,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:41,194 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:41,207 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-12 15:27:41,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:41,395 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:41,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-09-12 15:27:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117374128] [2024-09-12 15:27:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:27:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:27:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:27:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:27:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:27:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:27:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:27:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:27:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:27:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:27:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:27:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:27:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:27:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:27:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:27:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:27:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:27:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:27:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:27:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:27:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:27:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:27:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:27:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:27:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:27:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:27:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:27:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:27:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:27:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:27:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:27:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:27:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:27:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:27:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:27:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:27:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:27:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:27:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:27:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:27:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:42,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117374128] [2024-09-12 15:27:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117374128] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72648580] [2024-09-12 15:27:42,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:27:42,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:42,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:42,905 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:42,905 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-12 15:27:43,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:27:43,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:43,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-12 15:27:43,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:43,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:27:44,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72648580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:44,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:44,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-12 15:27:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794442563] [2024-09-12 15:27:44,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:44,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 15:27:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 15:27:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 15:27:44,652 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:44,900 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-12 15:27:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 15:27:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-12 15:27:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:44,903 INFO L225 Difference]: With dead ends: 349 [2024-09-12 15:27:44,903 INFO L226 Difference]: Without dead ends: 347 [2024-09-12 15:27:44,903 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:27:44,903 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:44,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-12 15:27:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-12 15:27:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:27:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-12 15:27:44,944 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-12 15:27:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:44,944 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-12 15:27:44,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:27:44,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-12 15:27:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-12 15:27:44,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:44,946 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:44,958 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:45,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-12 15:27:45,150 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-09-12 15:27:45,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530878784] [2024-09-12 15:27:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:27:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:27:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:27:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:27:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:27:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:27:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:27:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:27:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:27:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:27:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:27:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:27:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:27:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:27:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:27:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:27:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:27:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:27:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:27:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:27:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:27:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:27:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:27:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:27:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:27:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:27:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:27:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:27:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:27:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:27:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:27:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:27:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:27:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:27:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:27:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:27:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:27:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:27:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:27:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:27:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:27:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:47,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530878784] [2024-09-12 15:27:47,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530878784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128205920] [2024-09-12 15:27:47,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:27:47,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:47,732 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:47,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-12 15:27:47,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-12 15:27:47,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:47,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 15:27:47,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:48,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128205920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:50,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:50,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-09-12 15:27:50,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961089335] [2024-09-12 15:27:50,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:50,089 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-12 15:27:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-12 15:27:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 15:27:50,090 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:50,528 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-12 15:27:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-12 15:27:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 340 [2024-09-12 15:27:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:50,530 INFO L225 Difference]: With dead ends: 478 [2024-09-12 15:27:50,530 INFO L226 Difference]: Without dead ends: 344 [2024-09-12 15:27:50,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 15:27:50,531 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:50,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-12 15:27:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-12 15:27:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:27:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-12 15:27:50,555 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-12 15:27:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:50,555 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-12 15:27:50,556 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:50,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-12 15:27:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-12 15:27:50,557 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:50,557 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:50,570 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-12 15:27:50,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:50,758 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:50,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-09-12 15:27:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:50,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771108871] [2024-09-12 15:27:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:27:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:27:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:27:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:27:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:27:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:27:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:27:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:27:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:27:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:27:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:27:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:27:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:27:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:27:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:27:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:27:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:27:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:27:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:27:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:27:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:27:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:27:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:27:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:27:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:27:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:27:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:27:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:27:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:27:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:27:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:27:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:27:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:27:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:27:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:27:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:27:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:27:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:27:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:27:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:27:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:27:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771108871] [2024-09-12 15:27:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771108871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619269381] [2024-09-12 15:27:52,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:52,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:52,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:52,322 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:52,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-12 15:27:52,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:52,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:52,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 15:27:52,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:52,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:27:54,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619269381] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:54,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-12 15:27:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152396309] [2024-09-12 15:27:54,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:54,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 15:27:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 15:27:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:27:54,034 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:54,277 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-12 15:27:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 15:27:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-12 15:27:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:54,279 INFO L225 Difference]: With dead ends: 357 [2024-09-12 15:27:54,279 INFO L226 Difference]: Without dead ends: 355 [2024-09-12 15:27:54,280 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 15:27:54,280 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:54,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-12 15:27:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-12 15:27:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:27:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-12 15:27:54,317 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-12 15:27:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:54,317 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-12 15:27:54,317 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:27:54,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-12 15:27:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-12 15:27:54,319 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:54,320 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:54,332 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:54,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:54,524 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:54,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-09-12 15:27:54,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:54,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041603417] [2024-09-12 15:27:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:27:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:27:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:27:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:27:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:27:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:27:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:27:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:27:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:27:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:27:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:27:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:27:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:27:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:27:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:27:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:27:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:27:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:27:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:27:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:27:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:27:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:27:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:27:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:27:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:27:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:27:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:27:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:27:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:27:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:27:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:27:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:27:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:27:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:27:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:27:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:27:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:27:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:27:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:27:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:27:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:27:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 15:27:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:27:57,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041603417] [2024-09-12 15:27:57,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041603417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558589824] [2024-09-12 15:27:57,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:57,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:57,208 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:27:57,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-12 15:27:57,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-12 15:27:57,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:57,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-12 15:27:57,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:27:57,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:27:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558589824] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:59,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-09-12 15:27:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641100436] [2024-09-12 15:27:59,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:59,318 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-12 15:27:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-12 15:27:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 15:27:59,319 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:27:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:59,790 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-12 15:27:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-12 15:27:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-09-12 15:27:59,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:59,796 INFO L225 Difference]: With dead ends: 489 [2024-09-12 15:27:59,796 INFO L226 Difference]: Without dead ends: 352 [2024-09-12 15:27:59,796 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 15:27:59,799 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:59,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-12 15:27:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-12 15:27:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:27:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-12 15:27:59,825 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-12 15:27:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:59,826 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-12 15:27:59,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:27:59,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-12 15:27:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-12 15:27:59,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:59,827 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:59,840 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-12 15:28:00,031 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:00,032 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:00,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-09-12 15:28:00,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:00,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777764380] [2024-09-12 15:28:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:00,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:28:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:28:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:28:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:28:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:28:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:28:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:28:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:28:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:28:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:28:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:28:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:28:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:28:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:28:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:28:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:28:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:28:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:28:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:28:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:28:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:28:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:28:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:28:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:28:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:28:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:28:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:28:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:28:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:28:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:28:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:28:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:28:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:28:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:28:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:28:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:28:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:28:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:28:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:28:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:28:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:28:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:28:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777764380] [2024-09-12 15:28:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777764380] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740290154] [2024-09-12 15:28:01,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:28:01,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:01,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:01,471 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:01,472 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-12 15:28:01,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-12 15:28:01,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:01,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 15:28:01,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:01,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740290154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:02,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-12 15:28:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195891675] [2024-09-12 15:28:02,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:02,931 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 15:28:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 15:28:02,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 15:28:02,932 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:03,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:03,152 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-12 15:28:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 15:28:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-12 15:28:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:03,154 INFO L225 Difference]: With dead ends: 365 [2024-09-12 15:28:03,155 INFO L226 Difference]: Without dead ends: 363 [2024-09-12 15:28:03,155 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:28:03,155 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:03,155 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-12 15:28:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-12 15:28:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-12 15:28:03,181 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-12 15:28:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:03,181 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-12 15:28:03,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:03,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-12 15:28:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-12 15:28:03,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:03,183 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:03,196 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:03,386 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:03,387 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:03,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-09-12 15:28:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088924917] [2024-09-12 15:28:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:03,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:28:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:28:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:28:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:28:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:28:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:28:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:28:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:28:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:28:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:28:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:28:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:28:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:28:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:28:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:28:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:28:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:28:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:28:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:28:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:28:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:28:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:28:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:28:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:28:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:28:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:28:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:28:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:28:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:28:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:28:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:28:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:28:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:28:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:28:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:28:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:28:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:28:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:28:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:28:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:28:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:28:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:28:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 15:28:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088924917] [2024-09-12 15:28:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088924917] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046385004] [2024-09-12 15:28:05,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:28:05,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:05,945 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:05,945 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-12 15:28:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 15:28:06,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:06,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046385004] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:08,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-09-12 15:28:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772773469] [2024-09-12 15:28:08,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:08,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-12 15:28:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-12 15:28:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 15:28:08,392 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:08,927 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-12 15:28:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-12 15:28:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 356 [2024-09-12 15:28:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:08,929 INFO L225 Difference]: With dead ends: 500 [2024-09-12 15:28:08,929 INFO L226 Difference]: Without dead ends: 360 [2024-09-12 15:28:08,931 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 15:28:08,931 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:08,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:28:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-12 15:28:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-12 15:28:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-12 15:28:08,968 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-12 15:28:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:08,969 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-12 15:28:08,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:08,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-12 15:28:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-12 15:28:08,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:08,970 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:08,983 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-12 15:28:09,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-12 15:28:09,174 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:09,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-09-12 15:28:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:09,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881036366] [2024-09-12 15:28:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:28:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:28:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:28:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:28:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:28:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:28:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:28:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:28:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:28:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:28:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:28:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:28:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:28:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:28:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:28:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:28:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:28:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:28:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:28:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:28:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:28:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:28:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:28:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:28:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:28:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:28:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:28:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:28:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:28:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:28:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:28:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:28:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:28:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:28:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:28:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:28:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:28:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:28:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:28:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:28:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:28:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:28:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:28:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:10,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881036366] [2024-09-12 15:28:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881036366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004392514] [2024-09-12 15:28:10,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:28:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:10,802 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:10,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-12 15:28:10,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:28:10,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:10,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-12 15:28:10,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:11,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:12,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004392514] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:12,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:12,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-12 15:28:12,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842945626] [2024-09-12 15:28:12,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:12,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 15:28:12,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:12,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 15:28:12,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:28:12,545 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:12,812 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-12 15:28:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-12 15:28:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-12 15:28:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:12,815 INFO L225 Difference]: With dead ends: 373 [2024-09-12 15:28:12,815 INFO L226 Difference]: Without dead ends: 371 [2024-09-12 15:28:12,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:28:12,815 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:12,816 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-12 15:28:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-12 15:28:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-12 15:28:12,851 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-12 15:28:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:12,852 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-12 15:28:12,852 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:12,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-12 15:28:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-12 15:28:12,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:12,854 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:12,871 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-12 15:28:13,058 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-12 15:28:13,059 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:13,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-09-12 15:28:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313797002] [2024-09-12 15:28:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:28:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:28:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:28:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:28:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:28:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:28:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:28:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:28:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:28:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:28:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:28:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:28:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:28:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:28:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:28:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:28:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:28:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:28:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:28:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:28:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:28:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:28:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:28:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:28:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:28:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:28:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:28:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:28:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:28:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:28:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:28:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:28:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:28:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:28:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:28:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:28:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:28:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:28:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:28:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:28:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:28:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:28:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:28:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 15:28:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:16,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313797002] [2024-09-12 15:28:16,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313797002] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:16,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385468318] [2024-09-12 15:28:16,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:28:16,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:16,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:16,181 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:16,189 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-12 15:28:16,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-12 15:28:16,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:16,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 15:28:16,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:16,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385468318] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:18,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-09-12 15:28:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281289759] [2024-09-12 15:28:18,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:18,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-12 15:28:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-12 15:28:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 15:28:18,821 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:19,252 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-12 15:28:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-12 15:28:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-09-12 15:28:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:19,254 INFO L225 Difference]: With dead ends: 511 [2024-09-12 15:28:19,254 INFO L226 Difference]: Without dead ends: 368 [2024-09-12 15:28:19,255 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 15:28:19,255 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:19,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:28:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-12 15:28:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-12 15:28:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-12 15:28:19,282 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-12 15:28:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:19,282 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-12 15:28:19,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:19,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-12 15:28:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-12 15:28:19,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:19,284 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:19,299 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-12 15:28:19,484 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:19,484 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:19,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-09-12 15:28:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:19,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846638624] [2024-09-12 15:28:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:28:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:28:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:28:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:28:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:28:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:28:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:28:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:28:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:28:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:28:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:28:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:28:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:28:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:28:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:28:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:28:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:28:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:28:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:28:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:28:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:28:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:28:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:28:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:28:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:28:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:28:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:28:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:28:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:28:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:28:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:28:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:28:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:28:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:28:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:28:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:28:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:28:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:28:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:28:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:28:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:28:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:28:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:28:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:28:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:21,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846638624] [2024-09-12 15:28:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846638624] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264729573] [2024-09-12 15:28:21,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:28:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:21,104 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:21,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-12 15:28:21,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:28:21,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:21,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 15:28:21,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:21,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:28:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264729573] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:22,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:22,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-12 15:28:22,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677764864] [2024-09-12 15:28:22,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:22,687 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 15:28:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 15:28:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:28:22,688 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:22,951 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-12 15:28:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 15:28:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-09-12 15:28:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:22,954 INFO L225 Difference]: With dead ends: 381 [2024-09-12 15:28:22,954 INFO L226 Difference]: Without dead ends: 379 [2024-09-12 15:28:22,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:28:22,955 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:22,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-12 15:28:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-12 15:28:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-12 15:28:22,981 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-12 15:28:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:22,982 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-12 15:28:22,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:22,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-12 15:28:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-12 15:28:22,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:22,983 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:22,997 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:23,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:23,188 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:23,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-09-12 15:28:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837913017] [2024-09-12 15:28:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:28:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:28:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:28:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:28:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:28:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:28:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:28:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:28:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:28:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:28:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:28:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:28:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:28:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:28:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:28:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:28:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:28:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:28:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:28:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:28:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:28:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:28:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:28:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:28:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:28:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:28:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:28:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:28:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:28:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:28:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:28:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:28:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:28:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:28:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:28:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:28:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:28:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:28:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:28:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:28:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:28:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:28:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:28:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:28:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 15:28:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:26,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837913017] [2024-09-12 15:28:26,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837913017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:26,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993281635] [2024-09-12 15:28:26,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:28:26,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:26,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:26,333 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:26,339 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-12 15:28:26,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-12 15:28:26,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:26,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 15:28:26,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:26,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:28,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993281635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:28,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:28,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-09-12 15:28:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920797694] [2024-09-12 15:28:28,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:28,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 15:28:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 15:28:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 15:28:28,986 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:29,646 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-12 15:28:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-12 15:28:29,646 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 372 [2024-09-12 15:28:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:29,648 INFO L225 Difference]: With dead ends: 522 [2024-09-12 15:28:29,648 INFO L226 Difference]: Without dead ends: 376 [2024-09-12 15:28:29,649 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 15:28:29,649 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:29,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 15:28:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-12 15:28:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-12 15:28:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-12 15:28:29,677 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-12 15:28:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:29,678 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-12 15:28:29,678 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-12 15:28:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-12 15:28:29,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:29,680 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:29,692 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:29,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:29,880 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-09-12 15:28:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394335993] [2024-09-12 15:28:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:28:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:28:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:28:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:28:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:28:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:28:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:28:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:28:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:28:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:28:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:28:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:28:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:28:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:28:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:28:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:28:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:28:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:28:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:28:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:28:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:28:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:28:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:28:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:28:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:28:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:28:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:28:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:28:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:28:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:28:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:28:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:28:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:28:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:28:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:28:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:28:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:28:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:28:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-12 15:28:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 15:28:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-12 15:28:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 15:28:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-12 15:28:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 15:28:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-12 15:28:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:31,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394335993] [2024-09-12 15:28:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394335993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386559029] [2024-09-12 15:28:31,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:28:31,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:31,696 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:31,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-12 15:28:31,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-12 15:28:31,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:31,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-12 15:28:31,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:32,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:28:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386559029] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:33,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:33,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-12 15:28:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188688076] [2024-09-12 15:28:33,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:33,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 15:28:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 15:28:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:28:33,734 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:34,014 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-12 15:28:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 15:28:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-12 15:28:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:34,016 INFO L225 Difference]: With dead ends: 389 [2024-09-12 15:28:34,016 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 15:28:34,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 15:28:34,017 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:34,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 15:28:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-12 15:28:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-12 15:28:34,045 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-12 15:28:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:34,045 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-12 15:28:34,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:28:34,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-12 15:28:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-12 15:28:34,046 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:34,046 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:34,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-09-12 15:28:34,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:34,247 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:34,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-09-12 15:28:34,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:34,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725129190] [2024-09-12 15:28:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:28:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:28:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:28:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:28:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:28:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:28:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:28:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:28:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:28:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:28:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:28:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:28:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:28:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:28:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:28:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:28:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:28:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:28:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:28:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:28:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:28:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:28:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:28:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:28:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:28:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:28:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:28:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:28:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:28:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:28:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:28:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:28:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:28:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:28:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:28:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:28:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:28:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:28:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-12 15:28:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 15:28:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-12 15:28:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 15:28:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-12 15:28:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 15:28:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-12 15:28:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 15:28:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725129190] [2024-09-12 15:28:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725129190] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499582995] [2024-09-12 15:28:37,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:28:37,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:37,435 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:37,436 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-12 15:28:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:37,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 15:28:37,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:37,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499582995] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:39,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:39,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-09-12 15:28:39,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383585211] [2024-09-12 15:28:39,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:39,576 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-12 15:28:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-12 15:28:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 15:28:39,577 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:39,996 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-12 15:28:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-12 15:28:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-09-12 15:28:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:39,999 INFO L225 Difference]: With dead ends: 533 [2024-09-12 15:28:39,999 INFO L226 Difference]: Without dead ends: 384 [2024-09-12 15:28:40,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 15:28:40,000 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:40,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:28:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-12 15:28:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-12 15:28:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-12 15:28:40,029 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-12 15:28:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:40,029 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-12 15:28:40,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:40,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-12 15:28:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-12 15:28:40,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:40,031 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:40,044 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:40,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:40,235 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:40,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-09-12 15:28:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936075662] [2024-09-12 15:28:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:28:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:28:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:28:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:28:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:28:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:28:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:28:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:28:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:28:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:28:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:28:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:28:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:28:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:28:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:28:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:28:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:28:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:28:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:28:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:28:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:28:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:28:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:28:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:28:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:28:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:28:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:28:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:28:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:28:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:28:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:28:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:28:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:28:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:28:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:28:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:28:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:28:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:28:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:28:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-12 15:28:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 15:28:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-12 15:28:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 15:28:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-12 15:28:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 15:28:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-12 15:28:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:41,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936075662] [2024-09-12 15:28:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936075662] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873823920] [2024-09-12 15:28:41,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:28:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:41,924 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:41,925 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-12 15:28:42,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:28:42,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:42,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-12 15:28:42,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:42,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:28:43,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873823920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:43,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:43,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-12 15:28:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995070612] [2024-09-12 15:28:43,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:43,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 15:28:43,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 15:28:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 15:28:43,616 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:43,842 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-12 15:28:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 15:28:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-09-12 15:28:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:43,844 INFO L225 Difference]: With dead ends: 397 [2024-09-12 15:28:43,844 INFO L226 Difference]: Without dead ends: 395 [2024-09-12 15:28:43,845 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:28:43,845 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:43,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-12 15:28:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-12 15:28:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:28:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-12 15:28:43,874 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-12 15:28:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:43,874 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-12 15:28:43,874 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:28:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-12 15:28:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-12 15:28:43,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:43,876 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:43,888 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-12 15:28:44,079 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:44,079 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:44,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-09-12 15:28:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:44,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356645234] [2024-09-12 15:28:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:28:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:28:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:28:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:28:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:28:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:28:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:28:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:28:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:28:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:28:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:28:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:28:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:28:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:28:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:28:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:28:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:28:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:28:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:28:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:28:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:28:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:28:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:28:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:28:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:28:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:28:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:28:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:28:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:28:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:28:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:28:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:28:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:28:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:28:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:28:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:28:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:28:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:28:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:28:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-12 15:28:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 15:28:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-12 15:28:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 15:28:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-12 15:28:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 15:28:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-12 15:28:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 15:28:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356645234] [2024-09-12 15:28:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356645234] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71378774] [2024-09-12 15:28:47,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:28:47,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:47,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:47,044 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:47,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-12 15:28:47,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-12 15:28:47,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:47,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-12 15:28:47,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:47,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71378774] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:49,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:49,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-09-12 15:28:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883832342] [2024-09-12 15:28:49,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:49,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-12 15:28:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-12 15:28:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-12 15:28:49,351 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:49,911 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-12 15:28:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-12 15:28:49,911 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 388 [2024-09-12 15:28:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:49,914 INFO L225 Difference]: With dead ends: 544 [2024-09-12 15:28:49,914 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 15:28:49,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-12 15:28:49,915 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:49,915 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:28:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 15:28:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-12 15:28:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:28:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-12 15:28:49,955 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-12 15:28:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:49,956 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-12 15:28:49,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:49,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-12 15:28:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-12 15:28:49,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:49,957 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:49,970 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:50,161 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:50,162 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:50,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-09-12 15:28:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424638666] [2024-09-12 15:28:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:50,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:28:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:28:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:28:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:28:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:28:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:28:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:28:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:28:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:28:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:28:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:28:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:28:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:28:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:28:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:28:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:28:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:28:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:28:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:28:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:28:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:28:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:28:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:28:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:28:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:28:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:28:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:28:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:28:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:28:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:28:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:28:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:28:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:28:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:28:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:28:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:28:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:28:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:28:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:28:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:28:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-12 15:28:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 15:28:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-12 15:28:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 15:28:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-12 15:28:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 15:28:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-12 15:28:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424638666] [2024-09-12 15:28:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424638666] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147158679] [2024-09-12 15:28:52,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:28:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:52,075 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:52,076 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-12 15:28:52,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:28:52,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:52,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-12 15:28:52,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:52,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:28:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147158679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:54,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-12 15:28:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034102511] [2024-09-12 15:28:54,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:54,199 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 15:28:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 15:28:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:28:54,200 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:54,495 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-12 15:28:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-12 15:28:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-12 15:28:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:54,498 INFO L225 Difference]: With dead ends: 405 [2024-09-12 15:28:54,498 INFO L226 Difference]: Without dead ends: 403 [2024-09-12 15:28:54,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 15:28:54,499 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:54,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-12 15:28:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-12 15:28:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:28:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-12 15:28:54,529 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-12 15:28:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:54,529 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-12 15:28:54,529 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:28:54,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-12 15:28:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-12 15:28:54,530 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:54,531 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:54,543 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:54,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:54,734 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-09-12 15:28:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882412897] [2024-09-12 15:28:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:28:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:28:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:28:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:28:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:28:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:28:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:28:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:28:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:28:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:28:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:28:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:28:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:28:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:28:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:28:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:28:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:28:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:28:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:28:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:28:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:28:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:28:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:28:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:28:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:28:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:28:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:28:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:28:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:28:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:28:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:28:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:28:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:28:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:28:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:28:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:28:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:28:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:28:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:28:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:28:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-12 15:28:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 15:28:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-12 15:28:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 15:28:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-12 15:28:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 15:28:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-12 15:28:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 15:28:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:28:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882412897] [2024-09-12 15:28:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882412897] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613973592] [2024-09-12 15:28:58,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:28:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:58,237 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:28:58,238 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-12 15:28:58,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-12 15:28:58,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:58,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-12 15:28:58,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:28:58,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:29:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613973592] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:01,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:01,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-09-12 15:29:01,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78869510] [2024-09-12 15:29:01,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:01,202 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-12 15:29:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-12 15:29:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-12 15:29:01,203 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:01,854 INFO L93 Difference]: Finished difference Result 555 states and 605 transitions. [2024-09-12 15:29:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-09-12 15:29:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 396 [2024-09-12 15:29:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:01,857 INFO L225 Difference]: With dead ends: 555 [2024-09-12 15:29:01,858 INFO L226 Difference]: Without dead ends: 400 [2024-09-12 15:29:01,858 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 792 SyntacticMatches, 98 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7533 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-12 15:29:01,859 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:01,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1233 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-12 15:29:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-09-12 15:29:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2024-09-12 15:29:01,889 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 396 [2024-09-12 15:29:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:01,890 INFO L474 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2024-09-12 15:29:01,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2024-09-12 15:29:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-09-12 15:29:01,891 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:01,891 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:01,905 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:02,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-12 15:29:02,095 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:02,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2080072681, now seen corresponding path program 96 times [2024-09-12 15:29:02,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:02,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731307494] [2024-09-12 15:29:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:02,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:29:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:29:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:29:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:29:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:29:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:29:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:29:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:29:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:29:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:29:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:29:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:29:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:29:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:29:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:29:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:29:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:29:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:29:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:29:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:29:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:29:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:29:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:29:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:29:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:29:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:29:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:29:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:29:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:29:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:29:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:29:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:29:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:29:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:29:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:29:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:29:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:29:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:29:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:29:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:29:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 15:29:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-12 15:29:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 15:29:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-12 15:29:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 15:29:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-12 15:29:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 15:29:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-12 15:29:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:29:03,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:03,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731307494] [2024-09-12 15:29:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731307494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:03,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569922318] [2024-09-12 15:29:03,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:29:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:03,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:03,991 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:03,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-12 15:29:04,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-09-12 15:29:04,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:04,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-12 15:29:04,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:29:04,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:29:06,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569922318] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:06,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 57 [2024-09-12 15:29:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522129415] [2024-09-12 15:29:06,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:06,191 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 15:29:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 15:29:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1339, Invalid=1853, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 15:29:06,192 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:06,522 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2024-09-12 15:29:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 15:29:06,522 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2024-09-12 15:29:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:06,525 INFO L225 Difference]: With dead ends: 413 [2024-09-12 15:29:06,525 INFO L226 Difference]: Without dead ends: 411 [2024-09-12 15:29:06,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 840 SyntacticMatches, 98 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1345, Invalid=1961, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 15:29:06,525 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:06,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:29:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-09-12 15:29:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2024-09-12 15:29:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 303 states have (on average 1.0066006600660067) internal successors, (305), 304 states have internal predecessors, (305), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2024-09-12 15:29:06,592 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 397 [2024-09-12 15:29:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:06,592 INFO L474 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2024-09-12 15:29:06,592 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:06,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2024-09-12 15:29:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-09-12 15:29:06,595 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:06,595 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:06,608 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-09-12 15:29:06,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-09-12 15:29:06,798 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:06,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:06,798 INFO L85 PathProgramCache]: Analyzing trace with hash -440857427, now seen corresponding path program 97 times [2024-09-12 15:29:06,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623591130] [2024-09-12 15:29:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:29:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:29:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:29:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:29:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:29:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:29:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:29:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:29:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:29:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:29:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:29:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:29:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:29:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:29:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:29:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:29:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:29:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:29:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:29:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:29:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:29:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:29:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:29:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:29:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:29:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:29:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:29:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:29:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:29:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:29:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:29:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:29:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:29:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:29:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 15:29:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-12 15:29:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 15:29:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-12 15:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 15:29:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-12 15:29:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 15:29:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-12 15:29:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 15:29:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623591130] [2024-09-12 15:29:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623591130] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903422985] [2024-09-12 15:29:10,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:29:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:10,363 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:10,364 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-12 15:29:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-12 15:29:10,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:10,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903422985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:13,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 104 [2024-09-12 15:29:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793185551] [2024-09-12 15:29:13,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:13,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-12 15:29:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:13,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-12 15:29:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-12 15:29:13,338 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:13,877 INFO L93 Difference]: Finished difference Result 566 states and 617 transitions. [2024-09-12 15:29:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-09-12 15:29:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 404 [2024-09-12 15:29:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:13,882 INFO L225 Difference]: With dead ends: 566 [2024-09-12 15:29:13,882 INFO L226 Difference]: Without dead ends: 408 [2024-09-12 15:29:13,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 808 SyntacticMatches, 100 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7837 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-12 15:29:13,884 INFO L434 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:13,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-09-12 15:29:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2024-09-12 15:29:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2024-09-12 15:29:13,937 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 404 [2024-09-12 15:29:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:13,937 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2024-09-12 15:29:13,938 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:13,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2024-09-12 15:29:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-12 15:29:13,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:13,940 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:13,952 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-09-12 15:29:14,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-12 15:29:14,144 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:14,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -582667975, now seen corresponding path program 98 times [2024-09-12 15:29:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:14,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608539261] [2024-09-12 15:29:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:29:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:29:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:29:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:29:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:29:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:29:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:29:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:29:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:29:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:29:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:29:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:29:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:29:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:29:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:29:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:29:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:29:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:29:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:29:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:29:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:29:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:29:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:29:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:29:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:29:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:29:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:29:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:29:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:29:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:29:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:29:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:29:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:29:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:29:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:29:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:29:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:29:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:29:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:29:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:29:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:29:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 15:29:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-12 15:29:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 15:29:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-12 15:29:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 15:29:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-12 15:29:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 15:29:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-12 15:29:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:16,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608539261] [2024-09-12 15:29:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608539261] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132008490] [2024-09-12 15:29:16,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:29:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:16,276 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:16,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-12 15:29:16,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:29:16,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:16,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-12 15:29:16,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:16,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 15:29:18,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132008490] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:18,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:18,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2024-09-12 15:29:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251767726] [2024-09-12 15:29:18,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:18,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 15:29:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 15:29:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1391, Invalid=1915, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 15:29:18,483 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:18,721 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2024-09-12 15:29:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 15:29:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 405 [2024-09-12 15:29:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:18,724 INFO L225 Difference]: With dead ends: 421 [2024-09-12 15:29:18,724 INFO L226 Difference]: Without dead ends: 419 [2024-09-12 15:29:18,724 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 855 SyntacticMatches, 102 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1397, Invalid=2025, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 15:29:18,728 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:18,728 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-09-12 15:29:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2024-09-12 15:29:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2024-09-12 15:29:18,774 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 405 [2024-09-12 15:29:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:18,774 INFO L474 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2024-09-12 15:29:18,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:18,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2024-09-12 15:29:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-09-12 15:29:18,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:18,781 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:18,797 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-09-12 15:29:18,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-12 15:29:18,982 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:18,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2139016523, now seen corresponding path program 99 times [2024-09-12 15:29:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:18,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895412226] [2024-09-12 15:29:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:18,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:29:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:29:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:29:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:29:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:29:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:29:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:29:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:29:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:29:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:29:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:29:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:29:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:29:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:29:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:29:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:29:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:29:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:29:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:29:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:29:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:29:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:29:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:29:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:29:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:29:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:29:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:29:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:29:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:29:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:29:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:29:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:29:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:29:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:29:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:29:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:29:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:29:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:29:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:29:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:29:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:29:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 15:29:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-12 15:29:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 15:29:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-12 15:29:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 15:29:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-12 15:29:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 15:29:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-12 15:29:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 15:29:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895412226] [2024-09-12 15:29:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895412226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736751065] [2024-09-12 15:29:22,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:29:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:22,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:22,205 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:22,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-12 15:29:22,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-09-12 15:29:22,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:22,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-12 15:29:22,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:22,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736751065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:24,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:24,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 106 [2024-09-12 15:29:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733718946] [2024-09-12 15:29:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:24,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-12 15:29:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-12 15:29:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 15:29:24,698 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:25,147 INFO L93 Difference]: Finished difference Result 577 states and 629 transitions. [2024-09-12 15:29:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-09-12 15:29:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 412 [2024-09-12 15:29:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:25,153 INFO L225 Difference]: With dead ends: 577 [2024-09-12 15:29:25,153 INFO L226 Difference]: Without dead ends: 416 [2024-09-12 15:29:25,154 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 824 SyntacticMatches, 102 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8147 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 15:29:25,154 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:25,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 778 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:29:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-09-12 15:29:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-09-12 15:29:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2024-09-12 15:29:25,222 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 412 [2024-09-12 15:29:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:25,222 INFO L474 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2024-09-12 15:29:25,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2024-09-12 15:29:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-09-12 15:29:25,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:25,223 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:25,237 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:25,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-09-12 15:29:25,427 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:25,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -535583273, now seen corresponding path program 100 times [2024-09-12 15:29:25,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:25,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899085988] [2024-09-12 15:29:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:25,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:29:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:29:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:29:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:29:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:29:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:29:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:29:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:29:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:29:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:29:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:29:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:29:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:29:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:29:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:29:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:29:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:29:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:29:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:29:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:29:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:29:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:29:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:29:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:29:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:29:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:29:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:29:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:29:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:29:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:29:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:29:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:29:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:29:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:29:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:29:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:29:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:29:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:29:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:29:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:29:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:29:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:29:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 15:29:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-12 15:29:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 15:29:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-12 15:29:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 15:29:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-12 15:29:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 15:29:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-12 15:29:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:27,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899085988] [2024-09-12 15:29:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899085988] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97334286] [2024-09-12 15:29:27,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:29:27,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:27,519 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:27,520 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-12 15:29:27,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:29:27,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:27,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-12 15:29:27,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:27,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 15:29:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97334286] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:29,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 59 [2024-09-12 15:29:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237237131] [2024-09-12 15:29:29,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:29,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 15:29:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 15:29:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=1978, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 15:29:29,850 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:30,153 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2024-09-12 15:29:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-12 15:29:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2024-09-12 15:29:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:30,156 INFO L225 Difference]: With dead ends: 429 [2024-09-12 15:29:30,156 INFO L226 Difference]: Without dead ends: 427 [2024-09-12 15:29:30,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 874 SyntacticMatches, 102 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1450, Invalid=2090, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 15:29:30,157 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:30,157 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-12 15:29:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2024-09-12 15:29:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 15:29:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2024-09-12 15:29:30,189 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 413 [2024-09-12 15:29:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:30,189 INFO L474 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2024-09-12 15:29:30,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 15:29:30,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2024-09-12 15:29:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-09-12 15:29:30,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:30,191 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:30,204 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:30,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-12 15:29:30,396 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:30,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:30,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2118093549, now seen corresponding path program 101 times [2024-09-12 15:29:30,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435950910] [2024-09-12 15:29:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:30,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:29:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:29:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:29:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:29:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:29:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:29:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:29:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:29:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:29:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:29:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:29:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:29:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:29:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:29:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:29:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:29:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:29:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:29:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:29:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:29:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:29:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:29:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:29:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:29:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:29:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:29:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:29:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:29:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:29:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:29:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:29:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:29:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:29:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:29:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:29:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:29:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:29:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:29:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:29:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:29:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:29:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:29:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 15:29:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-12 15:29:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 15:29:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-12 15:29:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 15:29:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-12 15:29:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 15:29:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-12 15:29:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 15:29:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435950910] [2024-09-12 15:29:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435950910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463958385] [2024-09-12 15:29:34,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:29:34,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:34,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:34,115 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:34,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-12 15:29:34,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-09-12 15:29:34,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:34,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-12 15:29:34,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:34,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463958385] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:36,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:36,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 108 [2024-09-12 15:29:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665095310] [2024-09-12 15:29:36,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:36,935 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-09-12 15:29:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-09-12 15:29:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-12 15:29:36,940 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:37,536 INFO L93 Difference]: Finished difference Result 588 states and 641 transitions. [2024-09-12 15:29:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-09-12 15:29:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 420 [2024-09-12 15:29:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:37,538 INFO L225 Difference]: With dead ends: 588 [2024-09-12 15:29:37,538 INFO L226 Difference]: Without dead ends: 424 [2024-09-12 15:29:37,539 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 840 SyntacticMatches, 104 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8463 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-12 15:29:37,539 INFO L434 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:37,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1192 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-09-12 15:29:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2024-09-12 15:29:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 15:29:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2024-09-12 15:29:37,579 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 420 [2024-09-12 15:29:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:37,579 INFO L474 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2024-09-12 15:29:37,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:37,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2024-09-12 15:29:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-09-12 15:29:37,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:37,580 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:37,594 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:37,784 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-12 15:29:37,784 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash -571926663, now seen corresponding path program 102 times [2024-09-12 15:29:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:37,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825859622] [2024-09-12 15:29:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:37,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:29:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:29:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:29:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:29:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:29:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:29:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:29:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:29:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:29:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:29:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:29:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:29:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:29:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:29:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:29:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:29:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:29:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:29:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:29:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:29:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:29:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:29:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:29:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:29:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:29:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:29:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:29:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:29:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:29:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:29:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:29:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:29:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:29:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:29:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:29:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:29:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:29:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:29:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:29:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:29:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:29:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:29:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:29:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 15:29:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-09-12 15:29:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 15:29:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-09-12 15:29:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 15:29:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-09-12 15:29:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 15:29:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-09-12 15:29:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825859622] [2024-09-12 15:29:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825859622] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339205660] [2024-09-12 15:29:39,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:29:39,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:39,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:39,865 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:39,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-12 15:29:40,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-09-12 15:29:40,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:40,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-09-12 15:29:40,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:40,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-12 15:29:42,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339205660] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:42,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:42,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2024-09-12 15:29:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013336463] [2024-09-12 15:29:42,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:42,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 15:29:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:42,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 15:29:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=2042, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 15:29:42,245 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:42,545 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2024-09-12 15:29:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 15:29:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 421 [2024-09-12 15:29:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:42,548 INFO L225 Difference]: With dead ends: 437 [2024-09-12 15:29:42,548 INFO L226 Difference]: Without dead ends: 435 [2024-09-12 15:29:42,548 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 891 SyntacticMatches, 104 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1504, Invalid=2156, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 15:29:42,548 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:42,549 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-09-12 15:29:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2024-09-12 15:29:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 321 states have (on average 1.0062305295950156) internal successors, (323), 322 states have internal predecessors, (323), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-12 15:29:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2024-09-12 15:29:42,582 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 421 [2024-09-12 15:29:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:42,582 INFO L474 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2024-09-12 15:29:42,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:29:42,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2024-09-12 15:29:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-09-12 15:29:42,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:42,584 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:42,597 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-09-12 15:29:42,787 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:42,787 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:42,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1477926667, now seen corresponding path program 103 times [2024-09-12 15:29:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562009625] [2024-09-12 15:29:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:29:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:29:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:29:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:29:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:29:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:29:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:29:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:29:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:29:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:29:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:29:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:29:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:29:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:29:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:29:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:29:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:29:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:29:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:29:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:29:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:29:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:29:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:29:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:29:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:29:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:29:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:29:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:29:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:29:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:29:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:29:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:29:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:29:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:29:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:29:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:29:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:29:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:29:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:29:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:29:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:29:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:29:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:29:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 15:29:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-09-12 15:29:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 15:29:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-09-12 15:29:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 15:29:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-09-12 15:29:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 15:29:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-09-12 15:29:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 15:29:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 15:29:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562009625] [2024-09-12 15:29:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562009625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42341180] [2024-09-12 15:29:46,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:29:46,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:46,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:46,306 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:29:46,308 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-09-12 15:29:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:46,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-12 15:29:46,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 15:29:46,589 INFO L327 TraceCheckSpWp]: Computing backward predicates...