./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.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 5189fb62 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/fragtest_simple.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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --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-5189fb6-m [2024-09-12 21:29:23,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:29:24,019 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:29:24,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:29:24,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:29:24,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:29:24,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:29:24,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:29:24,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:29:24,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:29:24,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:29:24,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:29:24,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:29:24,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:29:24,058 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:29:24,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:29:24,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:29:24,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:29:24,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:29:24,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:29:24,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:29:24,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:29:24,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:29:24,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:29:24,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:29:24,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:29:24,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:29:24,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:29:24,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:29:24,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:29:24,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:29:24,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:29:24,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:29:24,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:29:24,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:29:24,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:29:24,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:29:24,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:29:24,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:29:24,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:29:24,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:29:24,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:29:24,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:29:24,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:29:24,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:29:24,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:29:24,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:29:24,321 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:29:24,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-12 21:29:25,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:29:25,963 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:29:25,964 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-12 21:29:25,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4327044cb/6a91ec44973a4d47b9908c6da09badea/FLAG95ff2f737 [2024-09-12 21:29:26,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4327044cb/6a91ec44973a4d47b9908c6da09badea [2024-09-12 21:29:26,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:29:26,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:29:26,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:29:26,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:29:26,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:29:26,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f35fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:29:26,546 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/fragtest_simple.i[893,906] [2024-09-12 21:29:26,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:29:26,589 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:29:26,600 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/fragtest_simple.i[893,906] [2024-09-12 21:29:26,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:29:26,623 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:29:26,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26 WrapperNode [2024-09-12 21:29:26,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:29:26,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:29:26,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:29:26,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:29:26,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,652 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:29:26,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:29:26,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:29:26,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:29:26,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:29:26,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,685 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 21:29:26,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:29:26,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:29:26,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:29:26,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:29:26,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (1/1) ... [2024-09-12 21:29:26,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:29:26,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:26,740 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 21:29:26,746 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 21:29:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:29:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:29:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:29:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:29:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:29:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:29:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:29:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:29:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:29:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:29:26,839 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:29:26,840 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:29:26,964 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-12 21:29:26,964 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:29:26,981 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:29:26,982 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-12 21:29:26,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:29:26 BoogieIcfgContainer [2024-09-12 21:29:26,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:29:26,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:29:26,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:29:26,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:29:26,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:29:26" (1/3) ... [2024-09-12 21:29:26,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0d2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:29:26" (2/3) ... [2024-09-12 21:29:26,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0d2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:29:26, skipping insertion in model container [2024-09-12 21:29:26,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:29:26" (3/3) ... [2024-09-12 21:29:26,989 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-09-12 21:29:27,001 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:29:27,002 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:29:27,043 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:29:27,049 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;@14effe8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:29:27,049 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:29:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 21:29:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 21:29:27,058 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:27,059 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:27,059 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:27,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1876965751, now seen corresponding path program 1 times [2024-09-12 21:29:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349056112] [2024-09-12 21:29:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,179 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 21:29:27,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:27,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349056112] [2024-09-12 21:29:27,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349056112] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:29:27,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:29:27,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 21:29:27,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923532000] [2024-09-12 21:29:27,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:29:27,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 21:29:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 21:29:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 21:29:27,211 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:29:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:27,244 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2024-09-12 21:29:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 21:29:27,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 15 [2024-09-12 21:29:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:27,253 INFO L225 Difference]: With dead ends: 45 [2024-09-12 21:29:27,254 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 21:29:27,257 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 21:29:27,260 INFO L434 NwaCegarLoop]: 27 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, 27 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 21:29:27,262 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:29:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 21:29:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 21:29:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 21:29:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-09-12 21:29:27,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2024-09-12 21:29:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:27,294 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-09-12 21:29:27,294 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:29:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-09-12 21:29:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 21:29:27,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:27,296 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:27,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:29:27,296 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:27,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1705971875, now seen corresponding path program 1 times [2024-09-12 21:29:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:27,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238336654] [2024-09-12 21:29:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,541 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 21:29:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238336654] [2024-09-12 21:29:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238336654] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:29:27,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:29:27,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:29:27,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455598784] [2024-09-12 21:29:27,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:29:27,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:29:27,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:29:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:29:27,545 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 21:29:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:27,597 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-09-12 21:29:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:29:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-09-12 21:29:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:27,599 INFO L225 Difference]: With dead ends: 31 [2024-09-12 21:29:27,599 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 21:29:27,599 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 21:29:27,600 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:27,601 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:29:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 21:29:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-12 21:29:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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 21:29:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-09-12 21:29:27,610 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2024-09-12 21:29:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:27,610 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-09-12 21:29:27,610 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 21:29:27,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-09-12 21:29:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 21:29:27,612 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:27,612 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:27,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 21:29:27,612 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:27,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1806984300, now seen corresponding path program 1 times [2024-09-12 21:29:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127753768] [2024-09-12 21:29:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:29:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127753768] [2024-09-12 21:29:27,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127753768] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:29:27,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:29:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:29:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674252204] [2024-09-12 21:29:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:29:27,762 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:29:27,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:29:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:29:27,764 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 21:29:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:27,825 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-09-12 21:29:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:29:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 25 [2024-09-12 21:29:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:27,828 INFO L225 Difference]: With dead ends: 48 [2024-09-12 21:29:27,828 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 21:29:27,829 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 21:29:27,830 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:27,830 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:29:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 21:29:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-09-12 21:29:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 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 21:29:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-12 21:29:27,845 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2024-09-12 21:29:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:27,846 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-12 21:29:27,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 21:29:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-12 21:29:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 21:29:27,848 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:27,848 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:27,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 21:29:27,849 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:27,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2085758041, now seen corresponding path program 1 times [2024-09-12 21:29:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528435200] [2024-09-12 21:29:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:29:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:28,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528435200] [2024-09-12 21:29:28,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528435200] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:28,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512005086] [2024-09-12 21:29:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:28,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:28,014 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 21:29:28,017 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 21:29:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 21:29:28,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:29:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512005086] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:28,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:28,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-09-12 21:29:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378922604] [2024-09-12 21:29:28,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:28,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 21:29:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 21:29:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:29:28,267 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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 21:29:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:28,439 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-09-12 21:29:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:29:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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 27 [2024-09-12 21:29:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:28,441 INFO L225 Difference]: With dead ends: 62 [2024-09-12 21:29:28,441 INFO L226 Difference]: Without dead ends: 47 [2024-09-12 21:29:28,445 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:29:28,446 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:28,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-12 21:29:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-12 21:29:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 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 21:29:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-12 21:29:28,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2024-09-12 21:29:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:28,459 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-12 21:29:28,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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 21:29:28,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-12 21:29:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 21:29:28,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:28,464 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:28,480 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 21:29:28,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:28,673 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:28,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 5025743, now seen corresponding path program 2 times [2024-09-12 21:29:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:28,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930061990] [2024-09-12 21:29:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:28,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:29:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:29:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930061990] [2024-09-12 21:29:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930061990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910751020] [2024-09-12 21:29:28,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:28,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:28,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:28,832 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 21:29:28,835 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 21:29:28,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:28,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:28,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 21:29:28,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:28,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:29:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910751020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:29,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-12 21:29:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35752158] [2024-09-12 21:29:29,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:29,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 21:29:29,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 21:29:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:29:29,101 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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 21:29:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:29,316 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-09-12 21:29:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:29:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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 37 [2024-09-12 21:29:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:29,318 INFO L225 Difference]: With dead ends: 79 [2024-09-12 21:29:29,318 INFO L226 Difference]: Without dead ends: 60 [2024-09-12 21:29:29,318 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:29:29,319 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:29,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:29,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-12 21:29:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-09-12 21:29:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 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 21:29:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-09-12 21:29:29,330 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 37 [2024-09-12 21:29:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:29,330 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-09-12 21:29:29,331 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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 21:29:29,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-09-12 21:29:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 21:29:29,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:29,332 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:29,349 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 21:29:29,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,533 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:29,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -607862011, now seen corresponding path program 3 times [2024-09-12 21:29:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54438153] [2024-09-12 21:29:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:29:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:29:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:29,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54438153] [2024-09-12 21:29:29,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54438153] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267684546] [2024-09-12 21:29:29,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:29,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:29,675 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 21:29:29,677 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 21:29:29,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 21:29:29,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:29,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 21:29:29,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:29,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:29:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267684546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:29,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2024-09-12 21:29:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539978530] [2024-09-12 21:29:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:29,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 21:29:29,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:29,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 21:29:29,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:29:29,980 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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 21:29:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:30,237 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-12 21:29:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:29:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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 47 [2024-09-12 21:29:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:30,239 INFO L225 Difference]: With dead ends: 96 [2024-09-12 21:29:30,239 INFO L226 Difference]: Without dead ends: 73 [2024-09-12 21:29:30,240 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:29:30,240 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:30,241 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-12 21:29:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2024-09-12 21:29:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 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 21:29:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-09-12 21:29:30,262 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 47 [2024-09-12 21:29:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:30,262 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-09-12 21:29:30,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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 21:29:30,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-09-12 21:29:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 21:29:30,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:30,265 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:30,282 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 21:29:30,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 21:29:30,470 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:30,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -674468357, now seen corresponding path program 4 times [2024-09-12 21:29:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83165078] [2024-09-12 21:29:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:29:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:29:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:29:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:29:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83165078] [2024-09-12 21:29:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83165078] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413278462] [2024-09-12 21:29:30,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:29:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:30,659 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 21:29:30,661 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 21:29:30,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:29:30,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:30,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:29:30,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:30,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:30,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413278462] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:30,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:30,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-12 21:29:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767154169] [2024-09-12 21:29:30,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:30,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 21:29:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 21:29:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:29:30,981 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:29:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:31,135 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2024-09-12 21:29:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:29:31,136 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 57 [2024-09-12 21:29:31,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:31,137 INFO L225 Difference]: With dead ends: 104 [2024-09-12 21:29:31,137 INFO L226 Difference]: Without dead ends: 77 [2024-09-12 21:29:31,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:29:31,138 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:31,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 139 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-12 21:29:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2024-09-12 21:29:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 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 21:29:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-09-12 21:29:31,167 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 57 [2024-09-12 21:29:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:31,167 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-09-12 21:29:31,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:29:31,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-09-12 21:29:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 21:29:31,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:31,173 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:31,190 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 21:29:31,373 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:31,374 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:31,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1699306816, now seen corresponding path program 5 times [2024-09-12 21:29:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394788946] [2024-09-12 21:29:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:29:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:29:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:29:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394788946] [2024-09-12 21:29:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394788946] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225069736] [2024-09-12 21:29:31,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:29:31,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:31,563 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 21:29:31,566 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 21:29:31,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 21:29:31,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:31,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 21:29:31,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:31,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:29:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225069736] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:31,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-09-12 21:29:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366525741] [2024-09-12 21:29:31,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:31,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 21:29:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 21:29:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-12 21:29:31,827 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:29:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:31,891 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-09-12 21:29:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:29:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2024-09-12 21:29:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:31,893 INFO L225 Difference]: With dead ends: 81 [2024-09-12 21:29:31,895 INFO L226 Difference]: Without dead ends: 79 [2024-09-12 21:29:31,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-12 21:29:31,896 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:31,896 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:29:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-12 21:29:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-09-12 21:29:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:29:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2024-09-12 21:29:31,912 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 59 [2024-09-12 21:29:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:31,912 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2024-09-12 21:29:31,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:29:31,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2024-09-12 21:29:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-12 21:29:31,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:31,917 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:31,934 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 21:29:32,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 21:29:32,118 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:32,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 705453474, now seen corresponding path program 6 times [2024-09-12 21:29:32,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:32,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15768274] [2024-09-12 21:29:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:29:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:29:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:29:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:29:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 69 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15768274] [2024-09-12 21:29:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15768274] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966190765] [2024-09-12 21:29:32,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:29:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:32,356 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 21:29:32,357 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 21:29:32,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 21:29:32,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:32,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 21:29:32,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:32,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:32,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966190765] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:32,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-12 21:29:32,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975029608] [2024-09-12 21:29:32,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:32,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 21:29:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 21:29:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:29:32,805 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 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 21:29:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:33,131 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2024-09-12 21:29:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 21:29:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 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 75 [2024-09-12 21:29:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:33,132 INFO L225 Difference]: With dead ends: 161 [2024-09-12 21:29:33,132 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 21:29:33,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 21:29:33,136 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:33,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 219 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 21:29:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2024-09-12 21:29:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:29:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-09-12 21:29:33,155 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 75 [2024-09-12 21:29:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:33,155 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-09-12 21:29:33,155 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 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 21:29:33,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-09-12 21:29:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 21:29:33,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:33,161 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:33,177 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:33,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:33,365 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:33,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1813255316, now seen corresponding path program 7 times [2024-09-12 21:29:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918950681] [2024-09-12 21:29:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:29:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 54 proven. 86 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918950681] [2024-09-12 21:29:33,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918950681] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323184705] [2024-09-12 21:29:33,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:29:33,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:33,592 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 21:29:33,594 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 21:29:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:33,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 21:29:33,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:33,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:29:33,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323184705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:33,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:33,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2024-09-12 21:29:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428559704] [2024-09-12 21:29:33,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:33,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 21:29:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 21:29:33,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:29:33,922 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:29:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:34,009 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-09-12 21:29:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 21:29:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 79 [2024-09-12 21:29:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:34,010 INFO L225 Difference]: With dead ends: 97 [2024-09-12 21:29:34,010 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 21:29:34,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:29:34,011 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:34,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 194 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 21:29:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-09-12 21:29:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 71 states have internal predecessors, (74), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-09-12 21:29:34,034 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 79 [2024-09-12 21:29:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:34,036 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-09-12 21:29:34,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:29:34,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-09-12 21:29:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-12 21:29:34,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:34,038 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:34,055 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 21:29:34,242 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:34,243 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:34,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 299028046, now seen corresponding path program 8 times [2024-09-12 21:29:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332233839] [2024-09-12 21:29:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:29:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:29:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332233839] [2024-09-12 21:29:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332233839] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134999470] [2024-09-12 21:29:34,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:34,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:34,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:34,597 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 21:29:34,598 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 21:29:34,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:34,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:34,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:29:34,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 56 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-09-12 21:29:34,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 142 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-12 21:29:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134999470] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:35,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:35,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2024-09-12 21:29:35,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592385238] [2024-09-12 21:29:35,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:35,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 21:29:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:35,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 21:29:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:29:35,128 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-12 21:29:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:35,360 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2024-09-12 21:29:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 21:29:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 95 [2024-09-12 21:29:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:35,361 INFO L225 Difference]: With dead ends: 161 [2024-09-12 21:29:35,362 INFO L226 Difference]: Without dead ends: 116 [2024-09-12 21:29:35,362 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 185 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:29:35,363 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:35,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 210 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-12 21:29:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2024-09-12 21:29:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:29:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-09-12 21:29:35,381 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 95 [2024-09-12 21:29:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:35,382 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-09-12 21:29:35,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-12 21:29:35,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-09-12 21:29:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-12 21:29:35,383 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:35,383 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:35,403 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 21:29:35,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:35,588 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:35,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash 892618579, now seen corresponding path program 9 times [2024-09-12 21:29:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623502582] [2024-09-12 21:29:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:29:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:29:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:29:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:29:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:29:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:29:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:29:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:29:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623502582] [2024-09-12 21:29:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623502582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848835514] [2024-09-12 21:29:35,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:35,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:35,924 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 21:29:35,925 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 21:29:35,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 21:29:35,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:35,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:29:35,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:36,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:29:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848835514] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:36,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 31 [2024-09-12 21:29:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872471930] [2024-09-12 21:29:36,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:36,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 21:29:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 21:29:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:29:36,525 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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 21:29:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:37,004 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2024-09-12 21:29:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:29:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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 97 [2024-09-12 21:29:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:37,006 INFO L225 Difference]: With dead ends: 173 [2024-09-12 21:29:37,006 INFO L226 Difference]: Without dead ends: 130 [2024-09-12 21:29:37,008 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 192 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=2707, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:29:37,008 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:37,008 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 308 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-12 21:29:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2024-09-12 21:29:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.05) internal successors, (84), 81 states have internal predecessors, (84), 12 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:29:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-09-12 21:29:37,030 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 97 [2024-09-12 21:29:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:37,031 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-09-12 21:29:37,031 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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 21:29:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-09-12 21:29:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-12 21:29:37,033 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:37,033 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:37,046 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 21:29:37,237 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 21:29:37,237 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:37,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1940072183, now seen corresponding path program 10 times [2024-09-12 21:29:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399118646] [2024-09-12 21:29:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:29:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:29:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:29:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:29:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:29:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:29:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:29:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 156 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:37,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399118646] [2024-09-12 21:29:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399118646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300519735] [2024-09-12 21:29:37,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:29:37,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:37,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:37,564 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 21:29:37,567 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 21:29:37,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:29:37,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:37,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:29:37,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:37,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:29:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300519735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:38,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 34 [2024-09-12 21:29:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645577779] [2024-09-12 21:29:38,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:38,220 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 21:29:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:38,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 21:29:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:29:38,221 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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 21:29:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:38,720 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2024-09-12 21:29:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:29:38,720 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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 107 [2024-09-12 21:29:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:38,722 INFO L225 Difference]: With dead ends: 190 [2024-09-12 21:29:38,722 INFO L226 Difference]: Without dead ends: 143 [2024-09-12 21:29:38,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 212 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=725, Invalid=3307, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:29:38,724 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 99 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:38,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 391 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-12 21:29:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2024-09-12 21:29:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 89 states have internal predecessors, (92), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:29:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2024-09-12 21:29:38,734 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 107 [2024-09-12 21:29:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:38,734 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2024-09-12 21:29:38,735 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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 21:29:38,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2024-09-12 21:29:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-12 21:29:38,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:38,736 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:38,751 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 21:29:38,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 21:29:38,941 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:38,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2078106239, now seen corresponding path program 11 times [2024-09-12 21:29:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594620333] [2024-09-12 21:29:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:29:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:29:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:29:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:29:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:29:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:29:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:29:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:29:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:29:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:29:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 193 proven. 137 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594620333] [2024-09-12 21:29:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594620333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098764455] [2024-09-12 21:29:39,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:29:39,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:39,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:39,370 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 21:29:39,372 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 21:29:39,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-12 21:29:39,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:39,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:29:39,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:39,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098764455] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:40,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:40,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-09-12 21:29:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247407592] [2024-09-12 21:29:40,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:40,087 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 21:29:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 21:29:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:29:40,088 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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 21:29:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:40,390 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2024-09-12 21:29:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 21:29:40,391 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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 117 [2024-09-12 21:29:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:40,392 INFO L225 Difference]: With dead ends: 198 [2024-09-12 21:29:40,392 INFO L226 Difference]: Without dead ends: 147 [2024-09-12 21:29:40,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 224 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:29:40,394 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:40,394 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 281 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-12 21:29:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2024-09-12 21:29:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 91 states have internal predecessors, (94), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:29:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2024-09-12 21:29:40,405 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 117 [2024-09-12 21:29:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:40,405 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2024-09-12 21:29:40,405 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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 21:29:40,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2024-09-12 21:29:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-12 21:29:40,407 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:40,407 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:40,421 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 21:29:40,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 21:29:40,610 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:40,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:40,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1424366020, now seen corresponding path program 12 times [2024-09-12 21:29:40,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:40,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021383372] [2024-09-12 21:29:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:40,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:29:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:29:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:29:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:29:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:40,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021383372] [2024-09-12 21:29:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021383372] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301960070] [2024-09-12 21:29:40,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:29:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:40,929 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 21:29:40,931 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 21:29:41,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-12 21:29:41,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:41,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 21:29:41,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:41,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:29:41,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301960070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:41,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:41,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-12 21:29:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549873517] [2024-09-12 21:29:41,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:41,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 21:29:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:41,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 21:29:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:29:41,310 INFO L87 Difference]: Start difference. First operand 114 states and 119 transitions. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:29:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:41,379 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2024-09-12 21:29:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 21:29:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 119 [2024-09-12 21:29:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:41,381 INFO L225 Difference]: With dead ends: 133 [2024-09-12 21:29:41,381 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 21:29:41,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 244 SyntacticMatches, 23 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:29:41,382 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:41,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 188 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 21:29:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-12 21:29:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:29:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-09-12 21:29:41,393 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 119 [2024-09-12 21:29:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:41,394 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-09-12 21:29:41,394 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:29:41,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-09-12 21:29:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-12 21:29:41,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:41,396 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:41,412 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 21:29:41,596 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 21:29:41,596 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:41,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash -552252250, now seen corresponding path program 13 times [2024-09-12 21:29:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018647392] [2024-09-12 21:29:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:29:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:29:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:29:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:29:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:29:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:29:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:29:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:29:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:42,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018647392] [2024-09-12 21:29:42,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018647392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:42,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763158531] [2024-09-12 21:29:42,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:29:42,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:42,034 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 21:29:42,037 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 21:29:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:42,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:29:42,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-09-12 21:29:42,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-09-12 21:29:42,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763158531] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:42,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:42,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-09-12 21:29:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752999342] [2024-09-12 21:29:42,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:42,815 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:29:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:29:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:29:42,816 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-12 21:29:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:43,099 INFO L93 Difference]: Finished difference Result 225 states and 267 transitions. [2024-09-12 21:29:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 21:29:43,099 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 135 [2024-09-12 21:29:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:43,100 INFO L225 Difference]: With dead ends: 225 [2024-09-12 21:29:43,100 INFO L226 Difference]: Without dead ends: 164 [2024-09-12 21:29:43,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 261 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:29:43,102 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 70 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:43,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-12 21:29:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 128. [2024-09-12 21:29:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 102 states have internal predecessors, (105), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:29:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2024-09-12 21:29:43,114 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 135 [2024-09-12 21:29:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:43,114 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2024-09-12 21:29:43,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-12 21:29:43,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2024-09-12 21:29:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-12 21:29:43,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:43,116 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:43,134 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 21:29:43,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 21:29:43,320 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:43,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1058366293, now seen corresponding path program 14 times [2024-09-12 21:29:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084609433] [2024-09-12 21:29:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:29:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:29:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:29:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:29:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:29:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:29:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:29:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:29:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:29:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:29:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:29:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:29:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:29:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084609433] [2024-09-12 21:29:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084609433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261108069] [2024-09-12 21:29:43,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:43,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:43,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:43,864 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 21:29:43,866 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 21:29:43,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:43,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:43,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:29:43,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:29:44,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:29:44,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261108069] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:44,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:44,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 17] total 43 [2024-09-12 21:29:44,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923004926] [2024-09-12 21:29:44,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:44,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 21:29:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 21:29:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:29:44,811 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 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 21:29:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:45,430 INFO L93 Difference]: Finished difference Result 237 states and 283 transitions. [2024-09-12 21:29:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 21:29:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 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 137 [2024-09-12 21:29:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:45,433 INFO L225 Difference]: With dead ends: 237 [2024-09-12 21:29:45,433 INFO L226 Difference]: Without dead ends: 178 [2024-09-12 21:29:45,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 272 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:29:45,435 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 187 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:45,435 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 583 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:29:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-12 21:29:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 138. [2024-09-12 21:29:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:29:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2024-09-12 21:29:45,448 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 137 [2024-09-12 21:29:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:45,449 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2024-09-12 21:29:45,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 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 21:29:45,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2024-09-12 21:29:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-12 21:29:45,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:45,450 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:45,467 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 21:29:45,654 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 21:29:45,655 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:45,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1330081121, now seen corresponding path program 15 times [2024-09-12 21:29:45,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:45,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905973421] [2024-09-12 21:29:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:45,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:29:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:29:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:29:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:29:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:29:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:29:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:29:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:29:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:29:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:29:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:29:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:29:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:46,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905973421] [2024-09-12 21:29:46,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905973421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:46,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347475800] [2024-09-12 21:29:46,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:46,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:46,210 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 21:29:46,211 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 21:29:46,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-12 21:29:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:46,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:29:46,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:29:46,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:29:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347475800] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:47,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:47,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 46 [2024-09-12 21:29:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291029501] [2024-09-12 21:29:47,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:47,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 21:29:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 21:29:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:29:47,211 INFO L87 Difference]: Start difference. First operand 138 states and 144 transitions. Second operand has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 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 21:29:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:47,948 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2024-09-12 21:29:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-12 21:29:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 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 147 [2024-09-12 21:29:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:47,950 INFO L225 Difference]: With dead ends: 254 [2024-09-12 21:29:47,950 INFO L226 Difference]: Without dead ends: 191 [2024-09-12 21:29:47,952 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 292 SyntacticMatches, 29 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1349, Invalid=6307, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:29:47,953 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 163 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:47,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 630 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:29:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-12 21:29:47,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2024-09-12 21:29:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 118 states have internal predecessors, (121), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2024-09-12 21:29:47,967 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 147 [2024-09-12 21:29:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:47,968 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2024-09-12 21:29:47,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 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 21:29:47,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:47,968 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2024-09-12 21:29:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-12 21:29:47,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:47,969 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:47,985 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:48,173 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 21:29:48,174 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:48,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1180928553, now seen corresponding path program 16 times [2024-09-12 21:29:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:48,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351757472] [2024-09-12 21:29:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:48,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:29:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:29:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:29:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:29:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:29:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:29:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:29:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:29:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:29:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:29:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:29:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:29:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:29:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:29:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351757472] [2024-09-12 21:29:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351757472] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558778319] [2024-09-12 21:29:48,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:29:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:48,742 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 21:29:48,743 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 21:29:48,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:29:48,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:48,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:29:48,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:49,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558778319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:49,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:49,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-09-12 21:29:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399095611] [2024-09-12 21:29:49,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:49,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:29:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:49,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:29:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:29:49,782 INFO L87 Difference]: Start difference. First operand 148 states and 154 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 21:29:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:50,229 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2024-09-12 21:29:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 21:29:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 157 [2024-09-12 21:29:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:50,232 INFO L225 Difference]: With dead ends: 262 [2024-09-12 21:29:50,232 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 21:29:50,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 300 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1029, Invalid=3003, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:29:50,234 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:50,234 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 320 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:29:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 21:29:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2024-09-12 21:29:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 120 states have internal predecessors, (123), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2024-09-12 21:29:50,254 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 157 [2024-09-12 21:29:50,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:50,255 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2024-09-12 21:29:50,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 21:29:50,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2024-09-12 21:29:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-12 21:29:50,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:50,258 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:50,273 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:50,458 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:50,458 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:50,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1351468060, now seen corresponding path program 17 times [2024-09-12 21:29:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:50,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050761006] [2024-09-12 21:29:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:29:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:29:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:29:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:29:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:29:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:29:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:29:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:29:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:29:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 238 proven. 422 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050761006] [2024-09-12 21:29:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050761006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508612843] [2024-09-12 21:29:50,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:29:50,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:50,927 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 21:29:50,927 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 21:29:51,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 21:29:51,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:51,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 21:29:51,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:51,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:29:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508612843] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:51,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 24 [2024-09-12 21:29:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316130237] [2024-09-12 21:29:51,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:51,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 21:29:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 21:29:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:29:51,470 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:51,605 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2024-09-12 21:29:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 21:29:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 159 [2024-09-12 21:29:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:51,607 INFO L225 Difference]: With dead ends: 169 [2024-09-12 21:29:51,607 INFO L226 Difference]: Without dead ends: 167 [2024-09-12 21:29:51,608 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 328 SyntacticMatches, 31 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:29:51,608 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:51,608 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 288 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-12 21:29:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2024-09-12 21:29:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:29:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2024-09-12 21:29:51,624 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 159 [2024-09-12 21:29:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:51,624 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2024-09-12 21:29:51,624 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:29:51,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2024-09-12 21:29:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-09-12 21:29:51,625 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:51,625 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:51,641 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 21:29:51,826 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:51,827 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:51,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 881673982, now seen corresponding path program 18 times [2024-09-12 21:29:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84477502] [2024-09-12 21:29:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:29:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:29:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:29:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:29:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:29:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:29:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:29:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:29:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:29:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:29:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:29:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:29:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:29:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:29:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:29:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:29:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 499 proven. 285 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84477502] [2024-09-12 21:29:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84477502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9564139] [2024-09-12 21:29:52,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:29:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:52,514 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 21:29:52,515 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 21:29:52,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-12 21:29:52,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:52,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 21:29:52,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:53,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9564139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:53,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-12 21:29:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259280671] [2024-09-12 21:29:53,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:53,588 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:29:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:29:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:29:53,591 INFO L87 Difference]: Start difference. First operand 162 states and 169 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 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 21:29:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:54,419 INFO L93 Difference]: Finished difference Result 359 states and 433 transitions. [2024-09-12 21:29:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 21:29:54,419 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 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 175 [2024-09-12 21:29:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:54,421 INFO L225 Difference]: With dead ends: 359 [2024-09-12 21:29:54,423 INFO L226 Difference]: Without dead ends: 217 [2024-09-12 21:29:54,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 335 SyntacticMatches, 29 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1930, Invalid=5902, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:29:54,426 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 150 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:54,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 516 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:29:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-12 21:29:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 166. [2024-09-12 21:29:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 133 states have internal predecessors, (136), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:29:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2024-09-12 21:29:54,450 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 175 [2024-09-12 21:29:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:54,450 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2024-09-12 21:29:54,451 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 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 21:29:54,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2024-09-12 21:29:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-12 21:29:54,453 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:54,453 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:54,472 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 21:29:54,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 21:29:54,654 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:54,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1584129992, now seen corresponding path program 19 times [2024-09-12 21:29:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212274292] [2024-09-12 21:29:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:29:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:29:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:29:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:29:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:29:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:29:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:29:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:29:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:29:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:29:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:29:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:29:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:29:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:29:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 304 proven. 546 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:55,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212274292] [2024-09-12 21:29:55,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212274292] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:55,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722720985] [2024-09-12 21:29:55,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:29:55,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:55,187 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 21:29:55,189 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 21:29:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:55,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 21:29:55,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:55,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:29:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722720985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:55,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 26 [2024-09-12 21:29:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508070739] [2024-09-12 21:29:55,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:55,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 21:29:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 21:29:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:29:55,852 INFO L87 Difference]: Start difference. First operand 166 states and 173 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:29:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:56,009 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2024-09-12 21:29:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 21:29:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 179 [2024-09-12 21:29:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:56,011 INFO L225 Difference]: With dead ends: 185 [2024-09-12 21:29:56,011 INFO L226 Difference]: Without dead ends: 183 [2024-09-12 21:29:56,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 35 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:29:56,012 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:56,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 332 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:29:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-12 21:29:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2024-09-12 21:29:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 142 states have internal predecessors, (145), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:29:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2024-09-12 21:29:56,029 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 179 [2024-09-12 21:29:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:56,030 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2024-09-12 21:29:56,030 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:29:56,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2024-09-12 21:29:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-12 21:29:56,032 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:56,032 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:56,046 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 21:29:56,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 21:29:56,235 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:56,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 837194410, now seen corresponding path program 20 times [2024-09-12 21:29:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190362368] [2024-09-12 21:29:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:29:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:29:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:29:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:29:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:29:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:29:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:29:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:29:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:29:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:29:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:29:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:29:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:29:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:29:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:29:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:29:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:29:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:29:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 633 proven. 357 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:29:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190362368] [2024-09-12 21:29:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190362368] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839747731] [2024-09-12 21:29:57,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:29:57,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:57,048 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 21:29:57,052 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 21:29:57,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:29:57,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:29:57,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:29:57,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:29:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 748 proven. 306 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-09-12 21:29:57,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:29:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 682 proven. 306 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2024-09-12 21:29:58,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839747731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:29:58,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:29:58,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 59 [2024-09-12 21:29:58,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291669057] [2024-09-12 21:29:58,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:29:58,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:29:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:29:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:29:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2639, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:29:58,304 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-12 21:29:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:29:58,938 INFO L93 Difference]: Finished difference Result 319 states and 381 transitions. [2024-09-12 21:29:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 21:29:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) Word has length 195 [2024-09-12 21:29:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:29:58,941 INFO L225 Difference]: With dead ends: 319 [2024-09-12 21:29:58,941 INFO L226 Difference]: Without dead ends: 234 [2024-09-12 21:29:58,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 375 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1469, Invalid=4383, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:29:58,942 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 138 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:29:58,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 481 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:29:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-12 21:29:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 180. [2024-09-12 21:29:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 143 states have (on average 1.027972027972028) internal successors, (147), 144 states have internal predecessors, (147), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:29:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2024-09-12 21:29:58,960 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 195 [2024-09-12 21:29:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:29:58,960 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 188 transitions. [2024-09-12 21:29:58,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-12 21:29:58,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 188 transitions. [2024-09-12 21:29:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-12 21:29:58,961 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:29:58,961 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:29:58,974 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 21:29:59,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 21:29:59,162 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:29:59,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:29:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2068839121, now seen corresponding path program 21 times [2024-09-12 21:29:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:29:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853440277] [2024-09-12 21:29:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:29:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:29:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:29:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:29:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:29:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:29:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:29:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:29:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:29:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:29:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:29:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:29:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:29:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:29:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:29:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:29:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:29:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:29:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:29:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:29:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:29:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:29:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:29:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:29:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853440277] [2024-09-12 21:29:59,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853440277] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:29:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082027660] [2024-09-12 21:29:59,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:29:59,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:29:59,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:29:59,956 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 21:29:59,957 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 21:30:00,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-12 21:30:00,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:00,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:30:00,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:30:00,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:30:01,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082027660] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:01,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:01,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23, 23] total 61 [2024-09-12 21:30:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013407287] [2024-09-12 21:30:01,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:01,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:30:01,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:30:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3046, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:30:01,486 INFO L87 Difference]: Start difference. First operand 180 states and 188 transitions. Second operand has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 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 21:30:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:02,598 INFO L93 Difference]: Finished difference Result 331 states and 397 transitions. [2024-09-12 21:30:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-12 21:30:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 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 197 [2024-09-12 21:30:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:02,600 INFO L225 Difference]: With dead ends: 331 [2024-09-12 21:30:02,600 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 21:30:02,602 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 392 SyntacticMatches, 39 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2399, Invalid=11407, Unknown=0, NotChecked=0, Total=13806 [2024-09-12 21:30:02,603 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 221 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:02,603 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 900 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:30:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 21:30:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2024-09-12 21:30:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:30:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-09-12 21:30:02,623 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 197 [2024-09-12 21:30:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:02,623 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-09-12 21:30:02,623 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 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 21:30:02,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-09-12 21:30:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-12 21:30:02,625 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:02,625 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:02,640 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 21:30:02,825 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 21:30:02,826 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1618547813, now seen corresponding path program 22 times [2024-09-12 21:30:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404153551] [2024-09-12 21:30:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:30:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:30:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:30:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:30:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:30:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:30:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:30:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:30:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:30:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:30:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:30:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:30:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:30:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:30:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:30:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:30:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:30:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:30:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:30:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404153551] [2024-09-12 21:30:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404153551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244806055] [2024-09-12 21:30:03,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:30:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:03,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:03,698 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 21:30:03,699 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 21:30:03,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:30:03,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:03,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:30:03,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:30:04,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:30:05,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244806055] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:05,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:05,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 24, 24] total 64 [2024-09-12 21:30:05,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538138805] [2024-09-12 21:30:05,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:05,318 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:30:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:30:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=3356, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:30:05,319 INFO L87 Difference]: Start difference. First operand 190 states and 198 transitions. Second operand has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 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 21:30:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:06,411 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2024-09-12 21:30:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-12 21:30:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 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 207 [2024-09-12 21:30:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:06,414 INFO L225 Difference]: With dead ends: 348 [2024-09-12 21:30:06,414 INFO L226 Difference]: Without dead ends: 261 [2024-09-12 21:30:06,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2645, Invalid=12607, Unknown=0, NotChecked=0, Total=15252 [2024-09-12 21:30:06,417 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 257 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:06,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 935 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:30:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-12 21:30:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 200. [2024-09-12 21:30:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 160 states have internal predecessors, (163), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:30:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2024-09-12 21:30:06,439 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 207 [2024-09-12 21:30:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:06,439 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2024-09-12 21:30:06,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 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 21:30:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2024-09-12 21:30:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-09-12 21:30:06,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:06,442 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:06,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 21:30:06,642 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:06,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 189971291, now seen corresponding path program 23 times [2024-09-12 21:30:06,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998894600] [2024-09-12 21:30:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:30:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:30:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:30:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:30:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:30:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:30:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:30:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:30:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:30:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:30:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:30:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:30:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:30:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:30:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:30:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:30:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:30:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:30:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:30:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:07,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998894600] [2024-09-12 21:30:07,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998894600] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745825355] [2024-09-12 21:30:07,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:30:07,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:07,585 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 21:30:07,586 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 21:30:07,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-12 21:30:07,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:07,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:30:07,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:08,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745825355] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:09,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2024-09-12 21:30:09,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815799813] [2024-09-12 21:30:09,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:09,094 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:30:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:30:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:30:09,096 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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 21:30:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:09,742 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2024-09-12 21:30:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 21:30:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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 217 [2024-09-12 21:30:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:09,744 INFO L225 Difference]: With dead ends: 356 [2024-09-12 21:30:09,745 INFO L226 Difference]: Without dead ends: 265 [2024-09-12 21:30:09,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 414 SyntacticMatches, 40 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1941, Invalid=5715, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:30:09,747 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 156 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:09,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 561 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:30:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-12 21:30:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2024-09-12 21:30:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 162 states have internal predecessors, (165), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:30:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2024-09-12 21:30:09,770 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 217 [2024-09-12 21:30:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:09,770 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2024-09-12 21:30:09,770 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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 21:30:09,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2024-09-12 21:30:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-12 21:30:09,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:09,772 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:09,793 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 21:30:09,973 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 21:30:09,973 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:09,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash -748729312, now seen corresponding path program 24 times [2024-09-12 21:30:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:09,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851525812] [2024-09-12 21:30:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:30:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:30:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:30:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:30:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:30:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:30:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:30:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:30:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:30:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:30:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:30:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:30:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:30:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:30:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:30:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:10,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851525812] [2024-09-12 21:30:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851525812] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975244829] [2024-09-12 21:30:10,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:30:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:10,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:10,566 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 21:30:10,567 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 21:30:10,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-12 21:30:10,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:10,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 21:30:10,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:10,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:30:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975244829] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:11,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:11,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 30 [2024-09-12 21:30:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470322990] [2024-09-12 21:30:11,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:11,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 21:30:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 21:30:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-09-12 21:30:11,334 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:30:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:11,505 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2024-09-12 21:30:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 21:30:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 219 [2024-09-12 21:30:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:11,508 INFO L225 Difference]: With dead ends: 221 [2024-09-12 21:30:11,508 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 21:30:11,509 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 454 SyntacticMatches, 43 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:30:11,510 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:11,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 365 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:30:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 21:30:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2024-09-12 21:30:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 171 states have internal predecessors, (174), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:30:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2024-09-12 21:30:11,543 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 219 [2024-09-12 21:30:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:11,544 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2024-09-12 21:30:11,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:30:11,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2024-09-12 21:30:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-09-12 21:30:11,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:11,547 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:11,565 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 21:30:11,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 21:30:11,748 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:11,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1979074306, now seen corresponding path program 25 times [2024-09-12 21:30:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:11,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622666742] [2024-09-12 21:30:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:30:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:30:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:30:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:30:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:30:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:30:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:30:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:30:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:30:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:30:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:30:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:30:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:30:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:30:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:30:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:30:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:30:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:30:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622666742] [2024-09-12 21:30:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622666742] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055325422] [2024-09-12 21:30:12,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:30:12,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:12,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:12,656 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 21:30:12,658 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 21:30:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:12,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:30:12,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-09-12 21:30:13,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-09-12 21:30:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055325422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:14,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-09-12 21:30:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990908836] [2024-09-12 21:30:14,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:14,318 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:30:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:30:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:30:14,319 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-12 21:30:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:15,021 INFO L93 Difference]: Finished difference Result 383 states and 458 transitions. [2024-09-12 21:30:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 21:30:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 235 [2024-09-12 21:30:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:15,023 INFO L225 Difference]: With dead ends: 383 [2024-09-12 21:30:15,023 INFO L226 Difference]: Without dead ends: 282 [2024-09-12 21:30:15,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 451 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-09-12 21:30:15,025 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 164 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:15,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 604 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:30:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-12 21:30:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2024-09-12 21:30:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 173 states have internal predecessors, (176), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:30:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2024-09-12 21:30:15,044 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 235 [2024-09-12 21:30:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:15,045 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2024-09-12 21:30:15,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-12 21:30:15,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2024-09-12 21:30:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-12 21:30:15,046 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:15,046 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:15,066 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 21:30:15,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 21:30:15,247 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:15,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash -300150649, now seen corresponding path program 26 times [2024-09-12 21:30:15,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972143494] [2024-09-12 21:30:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:30:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:30:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:30:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:30:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:30:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:30:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:30:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:30:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:30:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:30:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:30:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:30:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:30:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:30:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:30:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:30:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:30:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:30:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:30:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:30:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:30:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:30:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:30:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972143494] [2024-09-12 21:30:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972143494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842034772] [2024-09-12 21:30:16,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:30:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:16,237 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 21:30:16,238 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 21:30:16,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:30:16,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:16,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 21:30:16,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:30:17,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:30:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842034772] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:18,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:18,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 27, 27] total 73 [2024-09-12 21:30:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623960401] [2024-09-12 21:30:18,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:18,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:30:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:30:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:30:18,291 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 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 21:30:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:19,704 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2024-09-12 21:30:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-12 21:30:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 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 237 [2024-09-12 21:30:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:19,707 INFO L225 Difference]: With dead ends: 395 [2024-09-12 21:30:19,707 INFO L226 Difference]: Without dead ends: 296 [2024-09-12 21:30:19,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 472 SyntacticMatches, 47 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8828 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3455, Invalid=16567, Unknown=0, NotChecked=0, Total=20022 [2024-09-12 21:30:19,709 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 279 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:19,709 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1004 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:30:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-12 21:30:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 226. [2024-09-12 21:30:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 181 states have internal predecessors, (184), 26 states have call successors, (26), 20 states have call predecessors, (26), 19 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:30:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions. [2024-09-12 21:30:19,732 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 237 [2024-09-12 21:30:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:19,732 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions. [2024-09-12 21:30:19,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 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 21:30:19,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions. [2024-09-12 21:30:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-09-12 21:30:19,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:19,734 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:19,747 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 21:30:19,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:19,935 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:19,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1632362173, now seen corresponding path program 27 times [2024-09-12 21:30:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72855295] [2024-09-12 21:30:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:30:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:30:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:30:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:30:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:30:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:30:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:30:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:30:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:30:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:30:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:30:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:30:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:30:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:30:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:30:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:30:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:30:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:30:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:30:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:30:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:30:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:30:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:30:21,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72855295] [2024-09-12 21:30:21,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72855295] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435739160] [2024-09-12 21:30:21,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:30:21,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:21,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:21,127 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 21:30:21,127 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 21:30:21,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-12 21:30:21,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:21,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 21:30:21,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:30:22,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:30:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435739160] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:23,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28, 28] total 76 [2024-09-12 21:30:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601913389] [2024-09-12 21:30:23,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:23,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 21:30:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 21:30:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:30:23,409 INFO L87 Difference]: Start difference. First operand 226 states and 235 transitions. Second operand has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 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 21:30:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:24,903 INFO L93 Difference]: Finished difference Result 412 states and 494 transitions. [2024-09-12 21:30:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-12 21:30:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 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 247 [2024-09-12 21:30:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:24,906 INFO L225 Difference]: With dead ends: 412 [2024-09-12 21:30:24,906 INFO L226 Difference]: Without dead ends: 309 [2024-09-12 21:30:24,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 492 SyntacticMatches, 49 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9632 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3749, Invalid=18007, Unknown=0, NotChecked=0, Total=21756 [2024-09-12 21:30:24,908 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 269 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:24,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1232 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:30:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-12 21:30:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 236. [2024-09-12 21:30:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 188 states have (on average 1.0212765957446808) internal successors, (192), 189 states have internal predecessors, (192), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:30:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 245 transitions. [2024-09-12 21:30:24,936 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 245 transitions. Word has length 247 [2024-09-12 21:30:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:24,936 INFO L474 AbstractCegarLoop]: Abstraction has 236 states and 245 transitions. [2024-09-12 21:30:24,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 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 21:30:24,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 245 transitions. [2024-09-12 21:30:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-12 21:30:24,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:24,938 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:24,957 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 21:30:25,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:25,139 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:25,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash -334723917, now seen corresponding path program 28 times [2024-09-12 21:30:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143435501] [2024-09-12 21:30:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:30:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:30:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:30:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:30:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:30:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:30:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:30:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:30:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:30:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:30:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:30:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:30:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:30:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:30:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:30:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:30:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:30:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:30:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:30:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:30:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:30:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:30:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:30:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:26,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:26,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143435501] [2024-09-12 21:30:26,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143435501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:26,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333560998] [2024-09-12 21:30:26,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:30:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:26,265 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 21:30:26,267 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 21:30:26,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:30:26,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:26,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-12 21:30:26,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:27,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333560998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:28,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:28,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2024-09-12 21:30:28,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661345000] [2024-09-12 21:30:28,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:28,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-12 21:30:28,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-12 21:30:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4755, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:30:28,378 INFO L87 Difference]: Start difference. First operand 236 states and 245 transitions. Second operand has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 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 21:30:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:29,318 INFO L93 Difference]: Finished difference Result 420 states and 504 transitions. [2024-09-12 21:30:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 21:30:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 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 257 [2024-09-12 21:30:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:29,320 INFO L225 Difference]: With dead ends: 420 [2024-09-12 21:30:29,320 INFO L226 Difference]: Without dead ends: 313 [2024-09-12 21:30:29,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 490 SyntacticMatches, 48 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2709, Invalid=8003, Unknown=0, NotChecked=0, Total=10712 [2024-09-12 21:30:29,322 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 184 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:29,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 658 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:30:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-12 21:30:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 238. [2024-09-12 21:30:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 191 states have internal predecessors, (194), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:30:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2024-09-12 21:30:29,350 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 257 [2024-09-12 21:30:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:29,350 INFO L474 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2024-09-12 21:30:29,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 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 21:30:29,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2024-09-12 21:30:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-09-12 21:30:29,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:29,352 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:29,365 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 21:30:29,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:29,553 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:29,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash 126495864, now seen corresponding path program 29 times [2024-09-12 21:30:29,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:29,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409913343] [2024-09-12 21:30:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:30:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:30:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:30:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:30:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:30:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:30:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:30:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:30:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:30:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:30:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:30:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:30:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:30:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:30:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:30:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:30:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:30:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:30:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:30:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 648 proven. 1202 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409913343] [2024-09-12 21:30:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409913343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473111268] [2024-09-12 21:30:30,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:30:30,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:30,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:30,239 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 21:30:30,240 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 21:30:30,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-12 21:30:30,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:30,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-12 21:30:30,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:30,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:30:31,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473111268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:31,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:31,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 34 [2024-09-12 21:30:31,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533865862] [2024-09-12 21:30:31,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:31,184 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 21:30:31,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 21:30:31,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:30:31,185 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:30:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:31,337 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2024-09-12 21:30:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 21:30:31,337 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 259 [2024-09-12 21:30:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:31,339 INFO L225 Difference]: With dead ends: 257 [2024-09-12 21:30:31,339 INFO L226 Difference]: Without dead ends: 255 [2024-09-12 21:30:31,340 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 538 SyntacticMatches, 51 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=764, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:30:31,340 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:31,340 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 366 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:30:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-12 21:30:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 250. [2024-09-12 21:30:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 199 states have (on average 1.020100502512563) internal successors, (203), 200 states have internal predecessors, (203), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:30:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 260 transitions. [2024-09-12 21:30:31,372 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 260 transitions. Word has length 259 [2024-09-12 21:30:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:31,374 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 260 transitions. [2024-09-12 21:30:31,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:30:31,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 260 transitions. [2024-09-12 21:30:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-09-12 21:30:31,376 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:31,376 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:31,395 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 21:30:31,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:31,577 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:31,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1925543770, now seen corresponding path program 30 times [2024-09-12 21:30:31,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:31,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027044589] [2024-09-12 21:30:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:30:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:30:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:30:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:30:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:30:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:30:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:30:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:30:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:30:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:30:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:30:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:30:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:30:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:30:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:30:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:30:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:30:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:30:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:30:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:30:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:30:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1329 proven. 725 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:32,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027044589] [2024-09-12 21:30:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027044589] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675763549] [2024-09-12 21:30:32,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:30:32,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:32,819 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 21:30:32,820 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 21:30:32,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-12 21:30:32,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:32,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 21:30:32,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:34,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675763549] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:35,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2024-09-12 21:30:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870558964] [2024-09-12 21:30:35,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:35,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 21:30:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 21:30:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:30:35,044 INFO L87 Difference]: Start difference. First operand 250 states and 260 transitions. Second operand has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-12 21:30:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:36,601 INFO L93 Difference]: Finished difference Result 557 states and 674 transitions. [2024-09-12 21:30:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-12 21:30:36,601 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 275 [2024-09-12 21:30:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:36,604 INFO L225 Difference]: With dead ends: 557 [2024-09-12 21:30:36,604 INFO L226 Difference]: Without dead ends: 335 [2024-09-12 21:30:36,606 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 525 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2024-09-12 21:30:36,606 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 240 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:36,607 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 829 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:30:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-12 21:30:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 254. [2024-09-12 21:30:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 203 states have (on average 1.019704433497537) internal successors, (207), 204 states have internal predecessors, (207), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:30:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 264 transitions. [2024-09-12 21:30:36,636 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 264 transitions. Word has length 275 [2024-09-12 21:30:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:36,637 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 264 transitions. [2024-09-12 21:30:36,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-12 21:30:36,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 264 transitions. [2024-09-12 21:30:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-09-12 21:30:36,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:36,639 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:36,659 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-12 21:30:36,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 21:30:36,840 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:36,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash -407000284, now seen corresponding path program 31 times [2024-09-12 21:30:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073198006] [2024-09-12 21:30:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:30:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:30:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:30:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:30:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:30:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:30:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:30:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:30:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:30:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:30:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:30:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:30:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:30:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:30:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:30:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:30:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:30:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:30:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:30:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:30:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:30:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:30:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:30:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:30:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:30:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 754 proven. 1406 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:37,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:37,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073198006] [2024-09-12 21:30:37,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073198006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:37,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949595540] [2024-09-12 21:30:37,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:30:37,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:37,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:37,660 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 21:30:37,661 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 21:30:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:37,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 21:30:37,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:37,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 21:30:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949595540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:38,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 36 [2024-09-12 21:30:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353584407] [2024-09-12 21:30:38,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:38,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 21:30:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 21:30:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=781, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:30:38,666 INFO L87 Difference]: Start difference. First operand 254 states and 264 transitions. Second operand has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:30:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:38,841 INFO L93 Difference]: Finished difference Result 273 states and 285 transitions. [2024-09-12 21:30:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 21:30:38,841 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 279 [2024-09-12 21:30:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:38,844 INFO L225 Difference]: With dead ends: 273 [2024-09-12 21:30:38,844 INFO L226 Difference]: Without dead ends: 271 [2024-09-12 21:30:38,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 580 SyntacticMatches, 55 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=847, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:30:38,845 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:38,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 444 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:30:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-09-12 21:30:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2024-09-12 21:30:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 212 states have (on average 1.0188679245283019) internal successors, (216), 213 states have internal predecessors, (216), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:30:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 277 transitions. [2024-09-12 21:30:38,875 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 277 transitions. Word has length 279 [2024-09-12 21:30:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:38,876 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 277 transitions. [2024-09-12 21:30:38,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:30:38,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 277 transitions. [2024-09-12 21:30:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-09-12 21:30:38,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:38,878 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:38,895 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 21:30:39,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 21:30:39,079 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:39,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1516117510, now seen corresponding path program 32 times [2024-09-12 21:30:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:39,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162903654] [2024-09-12 21:30:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:30:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:30:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:30:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:30:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:30:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:30:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:30:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:30:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:30:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:30:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:30:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:30:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:30:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:30:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:30:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:30:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:30:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:30:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:30:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:30:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:30:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:30:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:30:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:30:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:30:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:30:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:30:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:30:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1543 proven. 837 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:30:40,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:40,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162903654] [2024-09-12 21:30:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162903654] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671947468] [2024-09-12 21:30:40,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:30:40,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:40,415 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 21:30:40,416 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 21:30:40,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:30:40,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:40,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-12 21:30:40,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1728 proven. 756 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-09-12 21:30:41,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1622 proven. 756 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2024-09-12 21:30:42,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671947468] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:42,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2024-09-12 21:30:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746356567] [2024-09-12 21:30:42,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:42,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-12 21:30:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-12 21:30:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:30:42,879 INFO L87 Difference]: Start difference. First operand 266 states and 277 transitions. Second operand has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-12 21:30:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:43,911 INFO L93 Difference]: Finished difference Result 477 states and 572 transitions. [2024-09-12 21:30:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 21:30:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) Word has length 295 [2024-09-12 21:30:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:43,913 INFO L225 Difference]: With dead ends: 477 [2024-09-12 21:30:43,913 INFO L226 Difference]: Without dead ends: 352 [2024-09-12 21:30:43,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 565 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2024-09-12 21:30:43,914 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 210 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:43,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 916 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:30:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-12 21:30:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2024-09-12 21:30:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 215 states have internal predecessors, (218), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:30:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2024-09-12 21:30:43,948 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 295 [2024-09-12 21:30:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:43,948 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2024-09-12 21:30:43,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-12 21:30:43,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2024-09-12 21:30:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-09-12 21:30:43,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:43,950 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:43,967 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-12 21:30:44,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 21:30:44,151 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:44,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1059375627, now seen corresponding path program 33 times [2024-09-12 21:30:44,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:44,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929454183] [2024-09-12 21:30:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:44,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:30:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:30:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:30:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:30:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:30:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:30:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:30:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:30:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:30:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:30:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:30:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:30:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:30:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:30:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:30:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:30:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:30:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:30:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:30:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:30:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:30:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:30:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:30:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:30:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:30:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:30:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:30:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:30:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:30:45,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929454183] [2024-09-12 21:30:45,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929454183] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586684819] [2024-09-12 21:30:45,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:30:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:45,546 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 21:30:45,547 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 21:30:45,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-12 21:30:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:45,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-12 21:30:45,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:30:46,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 21:30:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586684819] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:48,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:48,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 33, 33] total 91 [2024-09-12 21:30:48,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739476717] [2024-09-12 21:30:48,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:48,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-12 21:30:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-12 21:30:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=6821, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 21:30:48,690 INFO L87 Difference]: Start difference. First operand 268 states and 279 transitions. Second operand has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:30:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:50,638 INFO L93 Difference]: Finished difference Result 489 states and 588 transitions. [2024-09-12 21:30:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-09-12 21:30:50,638 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 297 [2024-09-12 21:30:50,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:50,640 INFO L225 Difference]: With dead ends: 489 [2024-09-12 21:30:50,640 INFO L226 Difference]: Without dead ends: 366 [2024-09-12 21:30:50,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 592 SyntacticMatches, 59 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14177 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5399, Invalid=26107, Unknown=0, NotChecked=0, Total=31506 [2024-09-12 21:30:50,643 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 391 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:50,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1316 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:30:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-12 21:30:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 278. [2024-09-12 21:30:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 222 states have (on average 1.018018018018018) internal successors, (226), 223 states have internal predecessors, (226), 32 states have call successors, (32), 24 states have call predecessors, (32), 23 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 21:30:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 289 transitions. [2024-09-12 21:30:50,679 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 289 transitions. Word has length 297 [2024-09-12 21:30:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:50,679 INFO L474 AbstractCegarLoop]: Abstraction has 278 states and 289 transitions. [2024-09-12 21:30:50,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:30:50,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 289 transitions. [2024-09-12 21:30:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-09-12 21:30:50,681 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:50,681 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:50,699 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 21:30:50,882 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 21:30:50,882 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:50,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1902340415, now seen corresponding path program 34 times [2024-09-12 21:30:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357266412] [2024-09-12 21:30:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:30:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:30:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:30:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:30:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:30:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:30:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:30:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:30:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:30:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:30:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:30:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:30:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:30:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:30:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:30:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:30:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:30:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:30:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:30:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:30:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:30:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:30:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:30:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:30:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:30:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:30:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:30:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:30:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:30:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:30:52,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357266412] [2024-09-12 21:30:52,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357266412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:52,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657064520] [2024-09-12 21:30:52,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:30:52,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:52,434 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 21:30:52,435 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 21:30:52,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:30:52,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:52,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 21:30:52,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:30:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:30:53,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:30:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 21:30:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657064520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:30:55,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:30:55,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 34, 34] total 94 [2024-09-12 21:30:55,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926443922] [2024-09-12 21:30:55,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:30:55,643 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-12 21:30:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:30:55,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-12 21:30:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=7281, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 21:30:55,644 INFO L87 Difference]: Start difference. First operand 278 states and 289 transitions. Second operand has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-12 21:30:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:30:57,659 INFO L93 Difference]: Finished difference Result 506 states and 608 transitions. [2024-09-12 21:30:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-09-12 21:30:57,663 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 307 [2024-09-12 21:30:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:30:57,665 INFO L225 Difference]: With dead ends: 506 [2024-09-12 21:30:57,665 INFO L226 Difference]: Without dead ends: 379 [2024-09-12 21:30:57,668 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 612 SyntacticMatches, 61 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15191 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5765, Invalid=27907, Unknown=0, NotChecked=0, Total=33672 [2024-09-12 21:30:57,668 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 349 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:30:57,668 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1402 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:30:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-12 21:30:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 288. [2024-09-12 21:30:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 230 states have (on average 1.017391304347826) internal successors, (234), 231 states have internal predecessors, (234), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:30:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 299 transitions. [2024-09-12 21:30:57,704 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 299 transitions. Word has length 307 [2024-09-12 21:30:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:30:57,705 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 299 transitions. [2024-09-12 21:30:57,705 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-12 21:30:57,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 299 transitions. [2024-09-12 21:30:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-12 21:30:57,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:30:57,707 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:30:57,723 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 21:30:57,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 21:30:57,908 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:30:57,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:30:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2081266487, now seen corresponding path program 35 times [2024-09-12 21:30:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:30:57,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081761743] [2024-09-12 21:30:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:30:57,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:30:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:30:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:30:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:30:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:30:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:30:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:30:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:30:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:30:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:30:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:30:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:30:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:30:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:30:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:30:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:30:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:30:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:30:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:30:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:30:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:30:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:30:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:30:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:30:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:30:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:30:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:30:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:30:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:30:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:30:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:30:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:30:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:30:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:30:59,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:30:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081761743] [2024-09-12 21:30:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081761743] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:30:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297967517] [2024-09-12 21:30:59,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:30:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:30:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:59,547 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 21:30:59,550 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 21:30:59,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-12 21:30:59,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:30:59,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 21:30:59,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:31:01,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:31:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297967517] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:02,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2024-09-12 21:31:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255346221] [2024-09-12 21:31:02,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:02,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-12 21:31:02,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:02,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-12 21:31:02,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=7197, Unknown=0, NotChecked=0, Total=9312 [2024-09-12 21:31:02,490 INFO L87 Difference]: Start difference. First operand 288 states and 299 transitions. Second operand has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:31:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:03,770 INFO L93 Difference]: Finished difference Result 514 states and 618 transitions. [2024-09-12 21:31:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 21:31:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 317 [2024-09-12 21:31:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:03,772 INFO L225 Difference]: With dead ends: 514 [2024-09-12 21:31:03,773 INFO L226 Difference]: Without dead ends: 383 [2024-09-12 21:31:03,774 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 604 SyntacticMatches, 60 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4101, Invalid=12155, Unknown=0, NotChecked=0, Total=16256 [2024-09-12 21:31:03,774 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 300 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:03,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 916 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:31:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-12 21:31:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 290. [2024-09-12 21:31:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 232 states have (on average 1.0172413793103448) internal successors, (236), 233 states have internal predecessors, (236), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:31:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 301 transitions. [2024-09-12 21:31:03,812 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 301 transitions. Word has length 317 [2024-09-12 21:31:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:03,813 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 301 transitions. [2024-09-12 21:31:03,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:31:03,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 301 transitions. [2024-09-12 21:31:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-09-12 21:31:03,815 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:03,815 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:03,833 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 21:31:04,019 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 21:31:04,019 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:04,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1371323012, now seen corresponding path program 36 times [2024-09-12 21:31:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:04,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039159607] [2024-09-12 21:31:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:04,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:31:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:31:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:31:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:31:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:31:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:31:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:31:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:31:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:31:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:31:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:31:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:31:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:31:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:31:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:31:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:31:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:31:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:31:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:31:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:31:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:31:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:31:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:31:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:31:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:31:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:31:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:31:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:31:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:31:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:31:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:31:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039159607] [2024-09-12 21:31:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039159607] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312017181] [2024-09-12 21:31:05,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:05,038 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 21:31:05,039 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 21:31:05,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-12 21:31:05,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:05,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-12 21:31:05,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:31:05,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 21:31:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312017181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:06,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 40 [2024-09-12 21:31:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044216144] [2024-09-12 21:31:06,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:06,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 21:31:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 21:31:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:31:06,338 INFO L87 Difference]: Start difference. First operand 290 states and 301 transitions. Second operand has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:31:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:06,595 INFO L93 Difference]: Finished difference Result 309 states and 322 transitions. [2024-09-12 21:31:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 21:31:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 319 [2024-09-12 21:31:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:06,598 INFO L225 Difference]: With dead ends: 309 [2024-09-12 21:31:06,598 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:31:06,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 664 SyntacticMatches, 63 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=615, Invalid=1025, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:31:06,599 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:06,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 490 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:31:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:31:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 302. [2024-09-12 21:31:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 241 states have (on average 1.016597510373444) internal successors, (245), 242 states have internal predecessors, (245), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:31:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 314 transitions. [2024-09-12 21:31:06,637 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 314 transitions. Word has length 319 [2024-09-12 21:31:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:06,637 INFO L474 AbstractCegarLoop]: Abstraction has 302 states and 314 transitions. [2024-09-12 21:31:06,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:31:06,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 314 transitions. [2024-09-12 21:31:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-09-12 21:31:06,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:06,640 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:06,654 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:06,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 21:31:06,840 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:06,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1624508510, now seen corresponding path program 37 times [2024-09-12 21:31:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929780593] [2024-09-12 21:31:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:31:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:31:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:31:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:31:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:31:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:31:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:31:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:31:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:31:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:31:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:31:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:31:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:31:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:31:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:31:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:31:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:31:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:31:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:31:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:31:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:31:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:31:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:31:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:31:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:31:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:31:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:31:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:31:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:31:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:31:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:31:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:31:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:31:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929780593] [2024-09-12 21:31:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929780593] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835869980] [2024-09-12 21:31:08,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:08,623 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 21:31:08,624 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 21:31:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 21:31:08,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2024-09-12 21:31:10,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2024-09-12 21:31:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835869980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:11,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-09-12 21:31:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845273031] [2024-09-12 21:31:11,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:11,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-12 21:31:11,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-12 21:31:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 21:31:11,589 INFO L87 Difference]: Start difference. First operand 302 states and 314 transitions. Second operand has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-12 21:31:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:12,892 INFO L93 Difference]: Finished difference Result 541 states and 649 transitions. [2024-09-12 21:31:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-12 21:31:12,893 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 335 [2024-09-12 21:31:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:12,896 INFO L225 Difference]: With dead ends: 541 [2024-09-12 21:31:12,896 INFO L226 Difference]: Without dead ends: 400 [2024-09-12 21:31:12,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 641 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-09-12 21:31:12,898 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 220 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:12,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 937 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:31:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-12 21:31:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 304. [2024-09-12 21:31:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 243 states have (on average 1.0164609053497942) internal successors, (247), 244 states have internal predecessors, (247), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:31:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 316 transitions. [2024-09-12 21:31:12,937 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 316 transitions. Word has length 335 [2024-09-12 21:31:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:12,937 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 316 transitions. [2024-09-12 21:31:12,938 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-12 21:31:12,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 316 transitions. [2024-09-12 21:31:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-09-12 21:31:12,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:12,940 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:12,958 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 21:31:13,140 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 21:31:13,141 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:13,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash -476083357, now seen corresponding path program 38 times [2024-09-12 21:31:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603664187] [2024-09-12 21:31:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:13,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:31:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:31:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:31:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:31:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:31:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:31:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:31:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:31:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:31:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:31:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:31:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:31:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:31:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:31:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:31:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:31:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:31:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:31:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:31:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:31:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:31:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:31:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:31:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:31:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:31:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:31:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:31:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:31:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:31:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:31:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:31:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:31:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:14,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603664187] [2024-09-12 21:31:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603664187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:14,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457022231] [2024-09-12 21:31:14,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:14,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:14,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:14,923 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 21:31:14,924 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 21:31:15,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:15,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:15,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 21:31:15,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:31:16,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 21:31:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457022231] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:18,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 37, 37] total 103 [2024-09-12 21:31:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175026530] [2024-09-12 21:31:18,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:18,794 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-12 21:31:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-12 21:31:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1755, Invalid=8751, Unknown=0, NotChecked=0, Total=10506 [2024-09-12 21:31:18,795 INFO L87 Difference]: Start difference. First operand 304 states and 316 transitions. Second operand has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-12 21:31:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:21,140 INFO L93 Difference]: Finished difference Result 553 states and 665 transitions. [2024-09-12 21:31:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-12 21:31:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 337 [2024-09-12 21:31:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:21,145 INFO L225 Difference]: With dead ends: 553 [2024-09-12 21:31:21,146 INFO L226 Difference]: Without dead ends: 414 [2024-09-12 21:31:21,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 672 SyntacticMatches, 67 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18443 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6935, Invalid=33667, Unknown=0, NotChecked=0, Total=40602 [2024-09-12 21:31:21,148 INFO L434 NwaCegarLoop]: 106 mSDtfsCounter, 509 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:21,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1475 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:31:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-09-12 21:31:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 314. [2024-09-12 21:31:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 251 states have (on average 1.0159362549800797) internal successors, (255), 252 states have internal predecessors, (255), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 21:31:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 326 transitions. [2024-09-12 21:31:21,191 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 326 transitions. Word has length 337 [2024-09-12 21:31:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:21,191 INFO L474 AbstractCegarLoop]: Abstraction has 314 states and 326 transitions. [2024-09-12 21:31:21,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-12 21:31:21,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 326 transitions. [2024-09-12 21:31:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-09-12 21:31:21,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:21,194 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:21,212 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 21:31:21,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:21,395 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1552902375, now seen corresponding path program 39 times [2024-09-12 21:31:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023800300] [2024-09-12 21:31:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:31:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:31:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:31:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:31:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:31:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:31:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:31:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:31:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:31:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:31:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:31:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:31:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:31:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:31:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:31:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:31:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:31:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:31:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:31:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:31:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:31:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:31:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:31:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:31:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:31:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:31:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:31:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:31:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:31:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:31:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:31:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:31:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:31:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:31:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023800300] [2024-09-12 21:31:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023800300] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494049593] [2024-09-12 21:31:23,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:23,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:23,324 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 21:31:23,325 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 21:31:23,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-09-12 21:31:23,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:23,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-12 21:31:23,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:31:24,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 21:31:27,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494049593] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:27,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 38, 38] total 106 [2024-09-12 21:31:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790252759] [2024-09-12 21:31:27,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:27,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-12 21:31:27,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-12 21:31:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1859, Invalid=9271, Unknown=0, NotChecked=0, Total=11130 [2024-09-12 21:31:27,430 INFO L87 Difference]: Start difference. First operand 314 states and 326 transitions. Second operand has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:31:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:29,929 INFO L93 Difference]: Finished difference Result 570 states and 685 transitions. [2024-09-12 21:31:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-09-12 21:31:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 347 [2024-09-12 21:31:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:29,933 INFO L225 Difference]: With dead ends: 570 [2024-09-12 21:31:29,933 INFO L226 Difference]: Without dead ends: 427 [2024-09-12 21:31:29,936 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 692 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19597 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7349, Invalid=35707, Unknown=0, NotChecked=0, Total=43056 [2024-09-12 21:31:29,937 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 567 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:29,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1580 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:31:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-12 21:31:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 324. [2024-09-12 21:31:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.0154440154440154) internal successors, (263), 260 states have internal predecessors, (263), 37 states have call successors, (37), 28 states have call predecessors, (37), 27 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:31:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 336 transitions. [2024-09-12 21:31:29,981 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 336 transitions. Word has length 347 [2024-09-12 21:31:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:29,981 INFO L474 AbstractCegarLoop]: Abstraction has 324 states and 336 transitions. [2024-09-12 21:31:29,981 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:31:29,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 336 transitions. [2024-09-12 21:31:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-12 21:31:29,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:29,984 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:30,002 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 21:31:30,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:30,185 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:30,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1587223183, now seen corresponding path program 40 times [2024-09-12 21:31:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:30,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076267571] [2024-09-12 21:31:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:31:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:31:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:31:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:31:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:31:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:31:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:31:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:31:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:31:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:31:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:31:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:31:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:31:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:31:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:31:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:31:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:31:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:31:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:31:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:31:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:31:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:31:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:31:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:31:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:31:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:31:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:31:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:31:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:31:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:31:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:31:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:31:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:31:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:31:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:31:32,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:32,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076267571] [2024-09-12 21:31:32,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076267571] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:32,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652584845] [2024-09-12 21:31:32,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:32,492 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 21:31:32,492 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 21:31:32,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:32,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:32,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 21:31:32,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:31:34,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 21:31:36,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652584845] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:36,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:36,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 39, 39] total 109 [2024-09-12 21:31:36,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402702293] [2024-09-12 21:31:36,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:36,919 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-12 21:31:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-12 21:31:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1966, Invalid=9806, Unknown=0, NotChecked=0, Total=11772 [2024-09-12 21:31:36,922 INFO L87 Difference]: Start difference. First operand 324 states and 336 transitions. Second operand has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-12 21:31:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:39,464 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2024-09-12 21:31:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-09-12 21:31:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 357 [2024-09-12 21:31:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:39,468 INFO L225 Difference]: With dead ends: 587 [2024-09-12 21:31:39,468 INFO L226 Difference]: Without dead ends: 440 [2024-09-12 21:31:39,472 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 712 SyntacticMatches, 71 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20786 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=7775, Invalid=37807, Unknown=0, NotChecked=0, Total=45582 [2024-09-12 21:31:39,472 INFO L434 NwaCegarLoop]: 112 mSDtfsCounter, 619 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:39,472 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1527 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:31:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-09-12 21:31:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 334. [2024-09-12 21:31:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 268 states have internal predecessors, (271), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:31:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 346 transitions. [2024-09-12 21:31:39,520 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 346 transitions. Word has length 357 [2024-09-12 21:31:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:39,520 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 346 transitions. [2024-09-12 21:31:39,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-12 21:31:39,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 346 transitions. [2024-09-12 21:31:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-09-12 21:31:39,522 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:39,523 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:39,541 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 21:31:39,723 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-12 21:31:39,723 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:39,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1287988677, now seen corresponding path program 41 times [2024-09-12 21:31:39,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:39,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349574548] [2024-09-12 21:31:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:39,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:31:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:31:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:31:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:31:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:31:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:31:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:31:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:31:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:31:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:31:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:31:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:31:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:31:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:31:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:31:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:31:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:31:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:31:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:31:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:31:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:31:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:31:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:31:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:31:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:31:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:31:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:31:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:31:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:31:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:31:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:31:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:31:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:31:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:31:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:31:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349574548] [2024-09-12 21:31:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349574548] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197499644] [2024-09-12 21:31:41,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:41,846 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 21:31:41,847 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 21:31:42,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-09-12 21:31:42,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:42,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 21:31:42,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:43,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197499644] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:45,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:45,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2024-09-12 21:31:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218649385] [2024-09-12 21:31:45,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:45,460 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-12 21:31:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-12 21:31:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=9617, Unknown=0, NotChecked=0, Total=12432 [2024-09-12 21:31:45,462 INFO L87 Difference]: Start difference. First operand 334 states and 346 transitions. Second operand has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-12 21:31:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:47,011 INFO L93 Difference]: Finished difference Result 595 states and 715 transitions. [2024-09-12 21:31:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-12 21:31:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 367 [2024-09-12 21:31:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:47,014 INFO L225 Difference]: With dead ends: 595 [2024-09-12 21:31:47,014 INFO L226 Difference]: Without dead ends: 444 [2024-09-12 21:31:47,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 699 SyntacticMatches, 70 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8112 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5481, Invalid=16275, Unknown=0, NotChecked=0, Total=21756 [2024-09-12 21:31:47,016 INFO L434 NwaCegarLoop]: 117 mSDtfsCounter, 344 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:47,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 772 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:31:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-09-12 21:31:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 336. [2024-09-12 21:31:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 270 states have internal predecessors, (273), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:31:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 348 transitions. [2024-09-12 21:31:47,078 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 348 transitions. Word has length 367 [2024-09-12 21:31:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:47,078 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 348 transitions. [2024-09-12 21:31:47,078 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-12 21:31:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 348 transitions. [2024-09-12 21:31:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-09-12 21:31:47,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:47,081 INFO L216 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:47,098 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 21:31:47,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:47,281 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:47,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1107602230, now seen corresponding path program 42 times [2024-09-12 21:31:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927732952] [2024-09-12 21:31:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:31:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:31:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:31:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:31:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:31:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:31:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:31:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:31:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:31:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:31:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:31:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:31:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:31:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:31:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:31:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:31:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:31:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:31:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:31:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:31:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:31:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:31:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:31:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:31:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:31:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:31:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:31:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:31:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:31:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:31:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:31:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:31:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:31:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:31:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:31:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927732952] [2024-09-12 21:31:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927732952] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635365170] [2024-09-12 21:31:48,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:48,627 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 21:31:48,628 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 21:31:48,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-12 21:31:48,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:48,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-12 21:31:48,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:49,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 21:31:50,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635365170] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:50,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:50,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 45 [2024-09-12 21:31:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645002558] [2024-09-12 21:31:50,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:50,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 21:31:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:50,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 21:31:50,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=1186, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:31:50,158 INFO L87 Difference]: Start difference. First operand 336 states and 348 transitions. Second operand has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:31:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:50,383 INFO L93 Difference]: Finished difference Result 355 states and 369 transitions. [2024-09-12 21:31:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:31:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 369 [2024-09-12 21:31:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:50,386 INFO L225 Difference]: With dead ends: 355 [2024-09-12 21:31:50,386 INFO L226 Difference]: Without dead ends: 353 [2024-09-12 21:31:50,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 769 SyntacticMatches, 73 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=800, Invalid=1270, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:31:50,387 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:50,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 472 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:31:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-09-12 21:31:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 348. [2024-09-12 21:31:50,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 278 states have (on average 1.014388489208633) internal successors, (282), 279 states have internal predecessors, (282), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 21:31:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 361 transitions. [2024-09-12 21:31:50,426 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 361 transitions. Word has length 369 [2024-09-12 21:31:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:50,426 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 361 transitions. [2024-09-12 21:31:50,427 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:31:50,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 361 transitions. [2024-09-12 21:31:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-09-12 21:31:50,429 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:50,429 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:50,443 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-12 21:31:50,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:50,630 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2008040532, now seen corresponding path program 43 times [2024-09-12 21:31:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816882517] [2024-09-12 21:31:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:31:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:31:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:31:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:31:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:31:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:31:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:31:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:31:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:31:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:31:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:31:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:31:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:31:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:31:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:31:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:31:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:31:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:31:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:31:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:31:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:31:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:31:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:31:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:31:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:31:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:31:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:31:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:31:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:31:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:31:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:31:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:31:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:31:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:31:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:31:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:31:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:31:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:31:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816882517] [2024-09-12 21:31:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816882517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402328624] [2024-09-12 21:31:52,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:52,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:52,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:52,889 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 21:31:52,890 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 21:31:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:53,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-12 21:31:53,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2024-09-12 21:31:55,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-09-12 21:31:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402328624] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:56,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:56,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 116 [2024-09-12 21:31:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014820782] [2024-09-12 21:31:56,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:56,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-12 21:31:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:56,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-12 21:31:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=10334, Unknown=0, NotChecked=0, Total=13340 [2024-09-12 21:31:56,700 INFO L87 Difference]: Start difference. First operand 348 states and 361 transitions. Second operand has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-12 21:31:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:58,349 INFO L93 Difference]: Finished difference Result 622 states and 746 transitions. [2024-09-12 21:31:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-12 21:31:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 385 [2024-09-12 21:31:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:58,352 INFO L225 Difference]: With dead ends: 622 [2024-09-12 21:31:58,352 INFO L226 Difference]: Without dead ends: 461 [2024-09-12 21:31:58,354 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 736 SyntacticMatches, 72 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5820, Invalid=17436, Unknown=0, NotChecked=0, Total=23256 [2024-09-12 21:31:58,354 INFO L434 NwaCegarLoop]: 120 mSDtfsCounter, 270 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:58,355 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 875 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:31:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-09-12 21:31:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 350. [2024-09-12 21:31:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 280 states have (on average 1.0142857142857142) internal successors, (284), 281 states have internal predecessors, (284), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 21:31:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 363 transitions. [2024-09-12 21:31:58,405 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 363 transitions. Word has length 385 [2024-09-12 21:31:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:58,406 INFO L474 AbstractCegarLoop]: Abstraction has 350 states and 363 transitions. [2024-09-12 21:31:58,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-12 21:31:58,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 363 transitions. [2024-09-12 21:31:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-09-12 21:31:58,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:58,408 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:58,429 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 21:31:58,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-12 21:31:58,609 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1538518159, now seen corresponding path program 44 times [2024-09-12 21:31:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601214263] [2024-09-12 21:31:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:32:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:32:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:32:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:32:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:32:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:32:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:32:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:32:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:32:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:32:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:32:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:32:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:32:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:32:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:32:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:32:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:32:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:32:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:32:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:32:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:32:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:32:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:32:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:32:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:32:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:32:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:32:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:32:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:32:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:32:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:32:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:32:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:32:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:32:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:32:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:32:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601214263] [2024-09-12 21:32:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601214263] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168954720] [2024-09-12 21:32:00,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:00,954 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 21:32:00,955 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 21:32:01,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:01,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:01,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 21:32:01,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:03,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168954720] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:04,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:04,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2024-09-12 21:32:04,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787529802] [2024-09-12 21:32:04,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:04,987 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-12 21:32:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-12 21:32:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3123, Invalid=10683, Unknown=0, NotChecked=0, Total=13806 [2024-09-12 21:32:04,990 INFO L87 Difference]: Start difference. First operand 350 states and 363 transitions. Second operand has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 21:32:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:06,862 INFO L93 Difference]: Finished difference Result 625 states and 752 transitions. [2024-09-12 21:32:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-12 21:32:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 387 [2024-09-12 21:32:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:06,866 INFO L225 Difference]: With dead ends: 625 [2024-09-12 21:32:06,867 INFO L226 Difference]: Without dead ends: 466 [2024-09-12 21:32:06,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 737 SyntacticMatches, 74 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9020 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6089, Invalid=18091, Unknown=0, NotChecked=0, Total=24180 [2024-09-12 21:32:06,869 INFO L434 NwaCegarLoop]: 123 mSDtfsCounter, 328 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:06,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1167 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:32:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-12 21:32:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2024-09-12 21:32:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 283 states have internal predecessors, (286), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 21:32:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 365 transitions. [2024-09-12 21:32:06,920 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 365 transitions. Word has length 387 [2024-09-12 21:32:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:06,920 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 365 transitions. [2024-09-12 21:32:06,921 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 21:32:06,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 365 transitions. [2024-09-12 21:32:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-12 21:32:06,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:06,923 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:06,941 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-12 21:32:07,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-12 21:32:07,124 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:07,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1299083786, now seen corresponding path program 45 times [2024-09-12 21:32:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:07,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110508856] [2024-09-12 21:32:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:32:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:32:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:32:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:32:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:32:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:32:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:32:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:32:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:32:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:32:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:32:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:32:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:32:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:32:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:32:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:32:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:32:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:32:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:32:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:32:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:32:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:32:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:32:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:32:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:32:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:32:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:32:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:32:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:32:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:32:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:32:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:32:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:32:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:32:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:32:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:32:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:32:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1480 proven. 2814 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110508856] [2024-09-12 21:32:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110508856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855201151] [2024-09-12 21:32:08,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:08,905 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 21:32:08,909 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 21:32:09,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-12 21:32:09,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:09,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-12 21:32:09,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:09,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 21:32:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855201151] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:10,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 47 [2024-09-12 21:32:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262293608] [2024-09-12 21:32:10,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:10,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:32:10,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:32:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=1287, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:32:10,591 INFO L87 Difference]: Start difference. First operand 352 states and 365 transitions. Second operand has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 21:32:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:10,816 INFO L93 Difference]: Finished difference Result 371 states and 386 transitions. [2024-09-12 21:32:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:32:10,816 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 389 [2024-09-12 21:32:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:10,818 INFO L225 Difference]: With dead ends: 371 [2024-09-12 21:32:10,818 INFO L226 Difference]: Without dead ends: 369 [2024-09-12 21:32:10,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 811 SyntacticMatches, 77 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=881, Invalid=1375, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:32:10,819 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:10,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-09-12 21:32:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2024-09-12 21:32:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 291 states have (on average 1.013745704467354) internal successors, (295), 292 states have internal predecessors, (295), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 21:32:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 378 transitions. [2024-09-12 21:32:10,857 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 378 transitions. Word has length 389 [2024-09-12 21:32:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:10,857 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 378 transitions. [2024-09-12 21:32:10,857 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 21:32:10,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 378 transitions. [2024-09-12 21:32:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-12 21:32:10,859 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:10,859 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:10,872 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 21:32:11,059 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:11,059 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:11,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1082531032, now seen corresponding path program 46 times [2024-09-12 21:32:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:11,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519252567] [2024-09-12 21:32:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:11,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:32:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:32:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:32:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:32:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:32:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:32:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:32:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:32:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:32:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:32:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:32:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:32:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:32:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:32:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:32:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:32:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:32:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:32:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:32:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:32:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:32:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:32:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:32:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:32:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:32:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:32:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:32:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:32:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:32:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:32:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:32:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:32:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:32:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:32:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:32:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:32:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:32:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:32:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:32:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3006 proven. 1596 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:13,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519252567] [2024-09-12 21:32:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519252567] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738837956] [2024-09-12 21:32:13,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:13,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:13,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:13,659 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 21:32:13,661 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 21:32:13,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:13,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:13,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-12 21:32:13,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:16,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738837956] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:18,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:18,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2024-09-12 21:32:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318692970] [2024-09-12 21:32:18,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:18,013 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-12 21:32:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-12 21:32:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2024-09-12 21:32:18,016 INFO L87 Difference]: Start difference. First operand 364 states and 378 transitions. Second operand has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-12 21:32:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:20,993 INFO L93 Difference]: Finished difference Result 814 states and 987 transitions. [2024-09-12 21:32:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-09-12 21:32:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 405 [2024-09-12 21:32:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:20,996 INFO L225 Difference]: With dead ends: 814 [2024-09-12 21:32:20,996 INFO L226 Difference]: Without dead ends: 488 [2024-09-12 21:32:21,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 772 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14382 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2024-09-12 21:32:21,000 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:21,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1212 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:32:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-09-12 21:32:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 368. [2024-09-12 21:32:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 21:32:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 382 transitions. [2024-09-12 21:32:21,044 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 382 transitions. Word has length 405 [2024-09-12 21:32:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:21,044 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 382 transitions. [2024-09-12 21:32:21,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-12 21:32:21,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 382 transitions. [2024-09-12 21:32:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-09-12 21:32:21,046 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:21,047 INFO L216 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:21,064 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:21,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:21,247 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:21,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -572398046, now seen corresponding path program 47 times [2024-09-12 21:32:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:21,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221289066] [2024-09-12 21:32:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:32:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:32:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:32:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:32:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:32:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:32:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:32:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:32:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:32:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:32:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:32:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:32:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:32:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:32:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:32:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:32:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:32:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:32:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:32:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:32:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:32:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:32:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:32:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:32:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:32:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:32:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:32:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:32:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:32:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:32:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:32:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:32:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:32:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:32:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:32:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:32:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:32:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1638 proven. 3122 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221289066] [2024-09-12 21:32:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221289066] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844562095] [2024-09-12 21:32:22,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:22,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:22,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:22,892 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 21:32:22,894 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 21:32:23,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-12 21:32:23,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:23,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-12 21:32:23,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:23,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 21:32:24,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844562095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:24,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 49 [2024-09-12 21:32:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256719113] [2024-09-12 21:32:24,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:24,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:32:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:32:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1392, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:32:24,775 INFO L87 Difference]: Start difference. First operand 368 states and 382 transitions. Second operand has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 21:32:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:25,035 INFO L93 Difference]: Finished difference Result 387 states and 403 transitions. [2024-09-12 21:32:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:32:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 409 [2024-09-12 21:32:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:25,038 INFO L225 Difference]: With dead ends: 387 [2024-09-12 21:32:25,038 INFO L226 Difference]: Without dead ends: 385 [2024-09-12 21:32:25,038 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 853 SyntacticMatches, 81 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=966, Invalid=1484, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:32:25,038 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:25,038 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 541 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-09-12 21:32:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2024-09-12 21:32:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 304 states have (on average 1.013157894736842) internal successors, (308), 305 states have internal predecessors, (308), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:32:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 395 transitions. [2024-09-12 21:32:25,096 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 395 transitions. Word has length 409 [2024-09-12 21:32:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:25,096 INFO L474 AbstractCegarLoop]: Abstraction has 380 states and 395 transitions. [2024-09-12 21:32:25,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 21:32:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 395 transitions. [2024-09-12 21:32:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-09-12 21:32:25,099 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:25,099 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:25,118 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:25,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-12 21:32:25,300 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:25,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:25,300 INFO L85 PathProgramCache]: Analyzing trace with hash 223911172, now seen corresponding path program 48 times [2024-09-12 21:32:25,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:25,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708227101] [2024-09-12 21:32:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:25,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:32:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:32:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:32:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:32:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:32:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:32:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:32:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:32:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:32:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:32:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:32:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:32:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:32:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:32:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:32:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:32:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:32:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:32:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:32:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:32:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:32:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:32:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:32:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:32:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:32:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:32:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:32:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:32:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:32:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:32:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:32:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:32:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:32:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:32:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:32:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:32:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:32:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:32:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:32:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3324 proven. 1760 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:28,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708227101] [2024-09-12 21:32:28,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708227101] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546347680] [2024-09-12 21:32:28,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:28,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:28,087 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 21:32:28,088 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 21:32:28,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-09-12 21:32:28,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:28,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-12 21:32:28,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:30,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546347680] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:32,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:32,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 131 [2024-09-12 21:32:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727731927] [2024-09-12 21:32:32,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:32,802 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-12 21:32:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-12 21:32:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3874, Invalid=13156, Unknown=0, NotChecked=0, Total=17030 [2024-09-12 21:32:32,804 INFO L87 Difference]: Start difference. First operand 380 states and 395 transitions. Second operand has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-12 21:32:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:36,070 INFO L93 Difference]: Finished difference Result 852 states and 1034 transitions. [2024-09-12 21:32:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-09-12 21:32:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 425 [2024-09-12 21:32:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:36,073 INFO L225 Difference]: With dead ends: 852 [2024-09-12 21:32:36,073 INFO L226 Difference]: Without dead ends: 510 [2024-09-12 21:32:36,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 810 SyntacticMatches, 79 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15846 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=11055, Invalid=34527, Unknown=0, NotChecked=0, Total=45582 [2024-09-12 21:32:36,077 INFO L434 NwaCegarLoop]: 132 mSDtfsCounter, 428 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:36,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1240 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:32:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-09-12 21:32:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 384. [2024-09-12 21:32:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 308 states have (on average 1.0129870129870129) internal successors, (312), 309 states have internal predecessors, (312), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:32:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 399 transitions. [2024-09-12 21:32:36,142 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 399 transitions. Word has length 425 [2024-09-12 21:32:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:36,142 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 399 transitions. [2024-09-12 21:32:36,142 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-12 21:32:36,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 399 transitions. [2024-09-12 21:32:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-09-12 21:32:36,145 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:36,145 INFO L216 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:36,163 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 21:32:36,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:36,346 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:36,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 741137742, now seen corresponding path program 49 times [2024-09-12 21:32:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:36,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884315329] [2024-09-12 21:32:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:36,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:32:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:32:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:32:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:32:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:32:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:32:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:32:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:32:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:32:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:32:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:32:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:32:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:32:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:32:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:32:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:32:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:32:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:32:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:32:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:32:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:32:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:32:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:32:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:32:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:32:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:32:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:32:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:32:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:32:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:32:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:32:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:32:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:32:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:32:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:32:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:32:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:32:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:32:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:32:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:32:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:32:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1804 proven. 3446 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884315329] [2024-09-12 21:32:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884315329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285174520] [2024-09-12 21:32:38,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:38,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:38,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:38,165 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 21:32:38,166 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 21:32:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-12 21:32:38,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:38,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 21:32:40,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285174520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:40,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:40,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 51 [2024-09-12 21:32:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988265693] [2024-09-12 21:32:40,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:40,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:32:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:32:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=1501, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:32:40,127 INFO L87 Difference]: Start difference. First operand 384 states and 399 transitions. Second operand has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:32:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:40,396 INFO L93 Difference]: Finished difference Result 403 states and 420 transitions. [2024-09-12 21:32:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 21:32:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 429 [2024-09-12 21:32:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:40,399 INFO L225 Difference]: With dead ends: 403 [2024-09-12 21:32:40,399 INFO L226 Difference]: Without dead ends: 401 [2024-09-12 21:32:40,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 895 SyntacticMatches, 85 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1055, Invalid=1597, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:32:40,400 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:40,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 550 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-09-12 21:32:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-09-12 21:32:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 317 states have (on average 1.0126182965299684) internal successors, (321), 318 states have internal predecessors, (321), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 21:32:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 412 transitions. [2024-09-12 21:32:40,456 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 412 transitions. Word has length 429 [2024-09-12 21:32:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:40,456 INFO L474 AbstractCegarLoop]: Abstraction has 396 states and 412 transitions. [2024-09-12 21:32:40,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:32:40,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 412 transitions. [2024-09-12 21:32:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-09-12 21:32:40,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:40,460 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:40,478 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 21:32:40,663 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:40,664 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:40,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1242020912, now seen corresponding path program 50 times [2024-09-12 21:32:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767489777] [2024-09-12 21:32:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:32:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:32:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:32:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:32:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:32:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:32:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:32:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:32:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:32:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:32:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:32:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:32:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:32:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:32:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:32:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:32:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:32:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:32:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:32:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:32:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:32:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:32:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:32:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:32:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:32:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:32:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:32:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:32:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:32:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:32:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:32:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:32:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:32:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:32:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:32:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:32:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:32:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:32:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:32:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:32:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:32:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:32:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:32:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3658 proven. 1932 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 21:32:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767489777] [2024-09-12 21:32:43,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767489777] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676117669] [2024-09-12 21:32:43,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:43,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:43,892 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 21:32:43,894 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 21:32:44,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:44,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:44,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-12 21:32:44,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2024-09-12 21:32:46,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3782 proven. 1806 refuted. 0 times theorem prover too weak. 3614 trivial. 0 not checked. [2024-09-12 21:32:48,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676117669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:48,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:48,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 88] total 134 [2024-09-12 21:32:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218120467] [2024-09-12 21:32:48,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:48,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-12 21:32:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-12 21:32:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=13814, Unknown=0, NotChecked=0, Total=17822 [2024-09-12 21:32:48,935 INFO L87 Difference]: Start difference. First operand 396 states and 412 transitions. Second operand has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-12 21:32:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:51,189 INFO L93 Difference]: Finished difference Result 712 states and 857 transitions. [2024-09-12 21:32:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-12 21:32:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) Word has length 445 [2024-09-12 21:32:51,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:51,193 INFO L225 Difference]: With dead ends: 712 [2024-09-12 21:32:51,193 INFO L226 Difference]: Without dead ends: 527 [2024-09-12 21:32:51,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 850 SyntacticMatches, 84 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7794, Invalid=23358, Unknown=0, NotChecked=0, Total=31152 [2024-09-12 21:32:51,195 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 402 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:51,195 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1069 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:32:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-09-12 21:32:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 398. [2024-09-12 21:32:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 319 states have (on average 1.0125391849529781) internal successors, (323), 320 states have internal predecessors, (323), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 21:32:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 414 transitions. [2024-09-12 21:32:51,253 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 414 transitions. Word has length 445 [2024-09-12 21:32:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:51,253 INFO L474 AbstractCegarLoop]: Abstraction has 398 states and 414 transitions. [2024-09-12 21:32:51,254 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-12 21:32:51,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 414 transitions. [2024-09-12 21:32:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-09-12 21:32:51,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:51,256 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:51,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-12 21:32:51,456 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-09-12 21:32:51,457 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:51,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1511265909, now seen corresponding path program 51 times [2024-09-12 21:32:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870504175] [2024-09-12 21:32:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:32:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:32:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:32:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:32:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:32:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:32:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:32:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:32:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:32:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:32:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:32:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:32:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:32:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:32:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:32:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:32:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:32:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:32:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:32:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:32:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:32:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:32:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:32:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:32:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:32:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:32:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:32:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:32:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:32:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:32:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:32:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:32:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:32:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:32:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:32:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:32:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:32:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:32:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:32:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:32:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:32:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:32:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:32:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 21:32:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870504175] [2024-09-12 21:32:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870504175] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873111042] [2024-09-12 21:32:54,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:54,663 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 21:32:54,664 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 21:32:54,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-09-12 21:32:54,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:54,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 21:32:54,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 21:32:57,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 21:33:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873111042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:01,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 48, 48] total 136 [2024-09-12 21:33:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656338901] [2024-09-12 21:33:01,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:01,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-09-12 21:33:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-09-12 21:33:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3064, Invalid=15296, Unknown=0, NotChecked=0, Total=18360 [2024-09-12 21:33:01,111 INFO L87 Difference]: Start difference. First operand 398 states and 414 transitions. Second operand has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-12 21:33:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:04,861 INFO L93 Difference]: Finished difference Result 724 states and 873 transitions. [2024-09-12 21:33:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-09-12 21:33:04,861 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 447 [2024-09-12 21:33:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:04,864 INFO L225 Difference]: With dead ends: 724 [2024-09-12 21:33:04,864 INFO L226 Difference]: Without dead ends: 541 [2024-09-12 21:33:04,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 892 SyntacticMatches, 89 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33062 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=12149, Invalid=59407, Unknown=0, NotChecked=0, Total=71556 [2024-09-12 21:33:04,868 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 667 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:04,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1916 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 21:33:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-12 21:33:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 408. [2024-09-12 21:33:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 327 states have (on average 1.0122324159021407) internal successors, (331), 328 states have internal predecessors, (331), 47 states have call successors, (47), 34 states have call predecessors, (47), 33 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 21:33:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 424 transitions. [2024-09-12 21:33:04,916 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 424 transitions. Word has length 447 [2024-09-12 21:33:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:04,916 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 424 transitions. [2024-09-12 21:33:04,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-12 21:33:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 424 transitions. [2024-09-12 21:33:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-09-12 21:33:04,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:04,919 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:04,938 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 21:33:05,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:05,120 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:05,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1132902251, now seen corresponding path program 52 times [2024-09-12 21:33:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696343672] [2024-09-12 21:33:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:33:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:33:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:33:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:33:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:33:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:33:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:33:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:33:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:33:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:33:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:33:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:33:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:33:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:33:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:33:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:33:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:33:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:33:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:33:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:33:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:33:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:33:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:33:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:33:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:33:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:33:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:33:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:33:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:33:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:33:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:33:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:33:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:33:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:33:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:33:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:33:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:33:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:33:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:33:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:33:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:33:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:33:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 21:33:08,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:08,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696343672] [2024-09-12 21:33:08,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696343672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:08,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429581014] [2024-09-12 21:33:08,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:33:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:08,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:08,390 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 21:33:08,391 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 21:33:08,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:33:08,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:08,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 21:33:08,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 21:33:10,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 21:33:15,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429581014] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:15,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:15,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 49, 49] total 139 [2024-09-12 21:33:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196358591] [2024-09-12 21:33:15,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:15,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-09-12 21:33:15,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-09-12 21:33:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3201, Invalid=15981, Unknown=0, NotChecked=0, Total=19182 [2024-09-12 21:33:15,022 INFO L87 Difference]: Start difference. First operand 408 states and 424 transitions. Second operand has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-09-12 21:33:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:18,964 INFO L93 Difference]: Finished difference Result 741 states and 893 transitions. [2024-09-12 21:33:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-09-12 21:33:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Word has length 457 [2024-09-12 21:33:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:18,967 INFO L225 Difference]: With dead ends: 741 [2024-09-12 21:33:18,967 INFO L226 Difference]: Without dead ends: 554 [2024-09-12 21:33:18,973 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 912 SyntacticMatches, 91 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34601 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=12695, Invalid=62107, Unknown=0, NotChecked=0, Total=74802 [2024-09-12 21:33:18,973 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 595 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:18,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2201 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 21:33:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-09-12 21:33:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 418. [2024-09-12 21:33:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 335 states have (on average 1.0119402985074626) internal successors, (339), 336 states have internal predecessors, (339), 48 states have call successors, (48), 35 states have call predecessors, (48), 34 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 21:33:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 434 transitions. [2024-09-12 21:33:19,048 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 434 transitions. Word has length 457 [2024-09-12 21:33:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:19,048 INFO L474 AbstractCegarLoop]: Abstraction has 418 states and 434 transitions. [2024-09-12 21:33:19,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-09-12 21:33:19,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 434 transitions. [2024-09-12 21:33:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-09-12 21:33:19,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:19,051 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:19,064 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-12 21:33:19,252 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:19,252 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:19,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1641447391, now seen corresponding path program 53 times [2024-09-12 21:33:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137605196] [2024-09-12 21:33:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:33:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:33:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:33:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:33:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:33:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:33:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:33:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:33:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:33:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:33:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:33:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:33:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:33:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:33:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:33:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:33:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:33:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:33:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:33:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:33:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:33:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:33:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:33:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:33:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:33:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:33:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:33:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:33:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:33:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:33:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:33:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:33:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:33:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:33:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:33:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:33:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:33:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:33:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:33:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:33:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:33:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:33:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:33:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:33:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:33:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137605196] [2024-09-12 21:33:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137605196] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854703711] [2024-09-12 21:33:22,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:33:22,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:22,690 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 21:33:22,691 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 21:33:23,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-12 21:33:23,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:23,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 21:33:23,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:26,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:28,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854703711] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:28,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:28,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94, 94] total 142 [2024-09-12 21:33:28,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109283259] [2024-09-12 21:33:28,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:28,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-09-12 21:33:28,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:28,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-09-12 21:33:28,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4515, Invalid=15507, Unknown=0, NotChecked=0, Total=20022 [2024-09-12 21:33:28,479 INFO L87 Difference]: Start difference. First operand 418 states and 434 transitions. Second operand has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-12 21:33:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:31,142 INFO L93 Difference]: Finished difference Result 749 states and 903 transitions. [2024-09-12 21:33:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-12 21:33:31,143 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 467 [2024-09-12 21:33:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:31,146 INFO L225 Difference]: With dead ends: 749 [2024-09-12 21:33:31,146 INFO L226 Difference]: Without dead ends: 558 [2024-09-12 21:33:31,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 889 SyntacticMatches, 90 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13132 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=8841, Invalid=26315, Unknown=0, NotChecked=0, Total=35156 [2024-09-12 21:33:31,149 INFO L434 NwaCegarLoop]: 147 mSDtfsCounter, 360 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:31,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1466 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:33:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-09-12 21:33:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 420. [2024-09-12 21:33:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 337 states have (on average 1.0118694362017804) internal successors, (341), 338 states have internal predecessors, (341), 48 states have call successors, (48), 35 states have call predecessors, (48), 34 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 21:33:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 436 transitions. [2024-09-12 21:33:31,204 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 436 transitions. Word has length 467 [2024-09-12 21:33:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:31,204 INFO L474 AbstractCegarLoop]: Abstraction has 420 states and 436 transitions. [2024-09-12 21:33:31,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-12 21:33:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 436 transitions. [2024-09-12 21:33:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-09-12 21:33:31,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:31,206 INFO L216 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:31,219 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-12 21:33:31,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-09-12 21:33:31,406 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:31,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713766, now seen corresponding path program 54 times [2024-09-12 21:33:31,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:31,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258618684] [2024-09-12 21:33:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:33:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:33:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:33:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:33:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:33:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:33:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:33:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:33:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:33:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:33:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:33:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:33:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:33:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:33:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:33:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:33:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:33:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:33:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:33:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:33:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:33:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:33:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:33:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:33:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:33:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:33:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:33:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:33:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:33:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:33:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:33:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:33:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:33:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:33:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:33:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:33:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:33:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:33:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:33:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:33:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:33:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:33:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:33:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:33:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:33:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:33,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258618684] [2024-09-12 21:33:33,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258618684] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:33,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506539697] [2024-09-12 21:33:33,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:33,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:33,511 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 21:33:33,512 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 21:33:33,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-09-12 21:33:33,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:33,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-09-12 21:33:33,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:34,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 21:33:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506539697] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:35,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 55 [2024-09-12 21:33:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074712271] [2024-09-12 21:33:35,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:35,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:33:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:33:35,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=1731, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:33:35,698 INFO L87 Difference]: Start difference. First operand 420 states and 436 transitions. Second operand has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 21:33:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:35,980 INFO L93 Difference]: Finished difference Result 439 states and 457 transitions. [2024-09-12 21:33:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 21:33:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 469 [2024-09-12 21:33:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:35,983 INFO L225 Difference]: With dead ends: 439 [2024-09-12 21:33:35,983 INFO L226 Difference]: Without dead ends: 437 [2024-09-12 21:33:35,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 979 SyntacticMatches, 93 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1245, Invalid=1835, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:33:35,984 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 12 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:35,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 573 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-09-12 21:33:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 432. [2024-09-12 21:33:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 346 states have (on average 1.0115606936416186) internal successors, (350), 347 states have internal predecessors, (350), 50 states have call successors, (50), 36 states have call predecessors, (50), 35 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 21:33:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 449 transitions. [2024-09-12 21:33:36,033 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 449 transitions. Word has length 469 [2024-09-12 21:33:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:36,034 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 449 transitions. [2024-09-12 21:33:36,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 21:33:36,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 449 transitions. [2024-09-12 21:33:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-09-12 21:33:36,036 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:36,036 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:36,049 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 21:33:36,236 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:36,236 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1774049160, now seen corresponding path program 55 times [2024-09-12 21:33:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844090087] [2024-09-12 21:33:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:33:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:33:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:33:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:33:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:33:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:33:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:33:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:33:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:33:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:33:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:33:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:33:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:33:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:33:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:33:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:33:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:33:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:33:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:33:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:33:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:33:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:33:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:33:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:33:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:33:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:33:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:33:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:33:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:33:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:33:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:33:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:33:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:33:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:33:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:33:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:33:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:33:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:33:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:33:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:33:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:33:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:33:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:33:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:33:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:33:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:33:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:33:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 21:33:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844090087] [2024-09-12 21:33:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844090087] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062425805] [2024-09-12 21:33:39,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:39,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:39,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:39,873 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 21:33:39,874 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 21:33:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:40,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 21:33:40,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2024-09-12 21:33:43,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2024-09-12 21:33:45,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062425805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:45,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2024-09-12 21:33:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054499197] [2024-09-12 21:33:45,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:45,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-12 21:33:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-12 21:33:45,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2024-09-12 21:33:45,609 INFO L87 Difference]: Start difference. First operand 432 states and 449 transitions. Second operand has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2024-09-12 21:33:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:48,407 INFO L93 Difference]: Finished difference Result 776 states and 934 transitions. [2024-09-12 21:33:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-12 21:33:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) Word has length 485 [2024-09-12 21:33:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:48,411 INFO L225 Difference]: With dead ends: 776 [2024-09-12 21:33:48,411 INFO L226 Difference]: Without dead ends: 575 [2024-09-12 21:33:48,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 926 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 21:33:48,414 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 368 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:48,414 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1354 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 21:33:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-09-12 21:33:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 434. [2024-09-12 21:33:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 348 states have (on average 1.0114942528735633) internal successors, (352), 349 states have internal predecessors, (352), 50 states have call successors, (50), 36 states have call predecessors, (50), 35 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 21:33:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 451 transitions. [2024-09-12 21:33:48,471 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 451 transitions. Word has length 485 [2024-09-12 21:33:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:48,471 INFO L474 AbstractCegarLoop]: Abstraction has 434 states and 451 transitions. [2024-09-12 21:33:48,472 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2024-09-12 21:33:48,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 451 transitions. [2024-09-12 21:33:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-09-12 21:33:48,473 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:48,474 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:48,487 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 21:33:48,674 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:48,674 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:48,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1273771827, now seen corresponding path program 56 times [2024-09-12 21:33:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650919168] [2024-09-12 21:33:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:33:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:33:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:33:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:33:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:33:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:33:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:33:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:33:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:33:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:33:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:33:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:33:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:33:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:33:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:33:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:33:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:33:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:33:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:33:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:33:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:33:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:33:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:33:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:33:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:33:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:33:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:33:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:33:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:33:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:33:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:33:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:33:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:33:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:33:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:33:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:33:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:33:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:33:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:33:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:33:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:33:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:33:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:33:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:33:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:33:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:33:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:33:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 21:33:52,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650919168] [2024-09-12 21:33:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650919168] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118105374] [2024-09-12 21:33:52,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:52,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:52,386 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 21:33:52,388 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 21:33:52,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:52,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:52,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-12 21:33:52,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 21:33:55,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 21:33:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118105374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:59,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 52, 52] total 148 [2024-09-12 21:33:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447228984] [2024-09-12 21:33:59,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:59,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2024-09-12 21:33:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2024-09-12 21:33:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3630, Invalid=18126, Unknown=0, NotChecked=0, Total=21756 [2024-09-12 21:33:59,806 INFO L87 Difference]: Start difference. First operand 434 states and 451 transitions. Second operand has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2024-09-12 21:34:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:04,423 INFO L93 Difference]: Finished difference Result 788 states and 950 transitions. [2024-09-12 21:34:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-09-12 21:34:04,424 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Word has length 487 [2024-09-12 21:34:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:04,427 INFO L225 Difference]: With dead ends: 788 [2024-09-12 21:34:04,427 INFO L226 Difference]: Without dead ends: 589 [2024-09-12 21:34:04,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 972 SyntacticMatches, 97 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39428 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=14405, Invalid=70567, Unknown=0, NotChecked=0, Total=84972 [2024-09-12 21:34:04,433 INFO L434 NwaCegarLoop]: 151 mSDtfsCounter, 863 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:04,433 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2688 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 21:34:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-09-12 21:34:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 444. [2024-09-12 21:34:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 356 states have (on average 1.0112359550561798) internal successors, (360), 357 states have internal predecessors, (360), 51 states have call successors, (51), 37 states have call predecessors, (51), 36 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:34:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 461 transitions. [2024-09-12 21:34:04,517 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 461 transitions. Word has length 487 [2024-09-12 21:34:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:04,518 INFO L474 AbstractCegarLoop]: Abstraction has 444 states and 461 transitions. [2024-09-12 21:34:04,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2024-09-12 21:34:04,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 461 transitions. [2024-09-12 21:34:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-09-12 21:34:04,520 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:04,520 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:04,533 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-12 21:34:04,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-12 21:34:04,720 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1404266691, now seen corresponding path program 57 times [2024-09-12 21:34:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690821931] [2024-09-12 21:34:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:34:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:34:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:34:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:34:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:34:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:34:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:34:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:34:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:34:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:34:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:34:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:34:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:34:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:34:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:34:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:34:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:34:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:34:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:34:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:34:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:34:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:34:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:34:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:34:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:34:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:34:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:34:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:34:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:34:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:34:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:34:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:34:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:34:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:34:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:34:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:34:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:34:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:34:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:34:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:34:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:34:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:34:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:34:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:34:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:34:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:34:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 21:34:08,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690821931] [2024-09-12 21:34:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690821931] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319965628] [2024-09-12 21:34:08,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:34:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:08,592 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 21:34:08,593 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 21:34:08,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2024-09-12 21:34:08,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:08,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-12 21:34:08,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 21:34:11,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 21:34:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319965628] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 53, 53] total 151 [2024-09-12 21:34:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333036126] [2024-09-12 21:34:16,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:16,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-09-12 21:34:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-09-12 21:34:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3779, Invalid=18871, Unknown=0, NotChecked=0, Total=22650 [2024-09-12 21:34:16,409 INFO L87 Difference]: Start difference. First operand 444 states and 461 transitions. Second operand has 151 states, 151 states have (on average 3.357615894039735) internal successors, (507), 150 states have internal predecessors, (507), 99 states have call successors, (100), 3 states have call predecessors, (100), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2024-09-12 21:34:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:21,109 INFO L93 Difference]: Finished difference Result 805 states and 970 transitions. [2024-09-12 21:34:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-09-12 21:34:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.357615894039735) internal successors, (507), 150 states have internal predecessors, (507), 99 states have call successors, (100), 3 states have call predecessors, (100), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Word has length 497 [2024-09-12 21:34:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:21,113 INFO L225 Difference]: With dead ends: 805 [2024-09-12 21:34:21,113 INFO L226 Difference]: Without dead ends: 602 [2024-09-12 21:34:21,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 992 SyntacticMatches, 99 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41107 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=14999, Invalid=73507, Unknown=0, NotChecked=0, Total=88506 [2024-09-12 21:34:21,119 INFO L434 NwaCegarLoop]: 154 mSDtfsCounter, 845 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:21,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2448 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 21:34:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-09-12 21:34:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 454. [2024-09-12 21:34:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 364 states have (on average 1.010989010989011) internal successors, (368), 365 states have internal predecessors, (368), 52 states have call successors, (52), 38 states have call predecessors, (52), 37 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 21:34:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 471 transitions. [2024-09-12 21:34:21,176 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 471 transitions. Word has length 497 [2024-09-12 21:34:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:21,176 INFO L474 AbstractCegarLoop]: Abstraction has 454 states and 471 transitions. [2024-09-12 21:34:21,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.357615894039735) internal successors, (507), 150 states have internal predecessors, (507), 99 states have call successors, (100), 3 states have call predecessors, (100), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2024-09-12 21:34:21,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 471 transitions. [2024-09-12 21:34:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-09-12 21:34:21,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:21,178 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:21,192 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 21:34:21,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-12 21:34:21,379 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2134077561, now seen corresponding path program 58 times [2024-09-12 21:34:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394358173] [2024-09-12 21:34:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:34:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:34:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:34:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:34:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:34:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:34:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:34:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:34:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:34:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:34:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:34:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:34:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:34:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:34:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:34:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:34:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:34:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:34:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:34:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:34:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:34:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:34:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:34:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:34:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:34:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:34:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:34:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:34:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:34:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:34:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:34:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:34:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:34:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:34:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:34:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:34:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:34:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:34:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:34:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:34:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:34:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:34:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:34:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:34:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:34:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:34:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:34:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:34:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 21:34:25,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394358173] [2024-09-12 21:34:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394358173] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165229549] [2024-09-12 21:34:25,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:25,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:25,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:25,452 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 21:34:25,453 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 21:34:25,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:25,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:25,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-12 21:34:25,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 21:34:28,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-12 21:34:33,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165229549] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:33,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 54, 54] total 154 [2024-09-12 21:34:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171524592] [2024-09-12 21:34:33,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:33,455 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2024-09-12 21:34:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2024-09-12 21:34:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3931, Invalid=19631, Unknown=0, NotChecked=0, Total=23562 [2024-09-12 21:34:33,457 INFO L87 Difference]: Start difference. First operand 454 states and 471 transitions. Second operand has 154 states, 154 states have (on average 3.357142857142857) internal successors, (517), 153 states have internal predecessors, (517), 101 states have call successors, (102), 3 states have call predecessors, (102), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-09-12 21:34:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:38,385 INFO L93 Difference]: Finished difference Result 822 states and 990 transitions. [2024-09-12 21:34:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-09-12 21:34:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 3.357142857142857) internal successors, (517), 153 states have internal predecessors, (517), 101 states have call successors, (102), 3 states have call predecessors, (102), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Word has length 507 [2024-09-12 21:34:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:38,388 INFO L225 Difference]: With dead ends: 822 [2024-09-12 21:34:38,389 INFO L226 Difference]: Without dead ends: 615 [2024-09-12 21:34:38,395 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1415 GetRequests, 1012 SyntacticMatches, 101 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42821 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=15605, Invalid=76507, Unknown=0, NotChecked=0, Total=92112 [2024-09-12 21:34:38,395 INFO L434 NwaCegarLoop]: 157 mSDtfsCounter, 749 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:38,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 2701 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 21:34:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-09-12 21:34:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 464. [2024-09-12 21:34:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 372 states have (on average 1.010752688172043) internal successors, (376), 373 states have internal predecessors, (376), 53 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:34:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 481 transitions. [2024-09-12 21:34:38,484 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 481 transitions. Word has length 507 [2024-09-12 21:34:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:38,484 INFO L474 AbstractCegarLoop]: Abstraction has 464 states and 481 transitions. [2024-09-12 21:34:38,484 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.357142857142857) internal successors, (517), 153 states have internal predecessors, (517), 101 states have call successors, (102), 3 states have call predecessors, (102), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-09-12 21:34:38,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 481 transitions. [2024-09-12 21:34:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-09-12 21:34:38,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:38,486 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:38,500 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 21:34:38,686 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:38,687 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:38,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1326313455, now seen corresponding path program 59 times [2024-09-12 21:34:38,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:38,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202827275] [2024-09-12 21:34:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:34:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:34:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:34:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:34:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:34:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:34:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:34:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:34:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:34:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:34:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:34:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:34:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:34:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:34:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:34:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:34:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:34:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:34:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:34:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:34:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:34:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:34:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:34:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:34:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:34:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:34:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:34:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:34:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:34:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:34:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:34:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:34:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:34:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:34:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:34:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:34:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:34:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:34:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:34:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:34:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:34:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:34:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:34:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:34:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:34:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:34:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:34:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:34:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:34:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:34:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 4953 proven. 2697 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202827275] [2024-09-12 21:34:42,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202827275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544930713] [2024-09-12 21:34:42,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:42,916 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 21:34:42,917 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 21:34:43,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2024-09-12 21:34:43,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:43,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-12 21:34:43,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:46,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544930713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:49,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 157 [2024-09-12 21:34:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593190637] [2024-09-12 21:34:49,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:49,639 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2024-09-12 21:34:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2024-09-12 21:34:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5515, Invalid=18977, Unknown=0, NotChecked=0, Total=24492 [2024-09-12 21:34:49,642 INFO L87 Difference]: Start difference. First operand 464 states and 481 transitions. Second operand has 157 states, 157 states have (on average 2.694267515923567) internal successors, (423), 157 states have internal predecessors, (423), 103 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2024-09-12 21:34:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:52,982 INFO L93 Difference]: Finished difference Result 830 states and 1000 transitions. [2024-09-12 21:34:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-09-12 21:34:52,982 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 2.694267515923567) internal successors, (423), 157 states have internal predecessors, (423), 103 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Word has length 517 [2024-09-12 21:34:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:52,986 INFO L225 Difference]: With dead ends: 830 [2024-09-12 21:34:52,986 INFO L226 Difference]: Without dead ends: 619 [2024-09-12 21:34:52,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 984 SyntacticMatches, 100 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16092 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=10821, Invalid=32235, Unknown=0, NotChecked=0, Total=43056 [2024-09-12 21:34:52,988 INFO L434 NwaCegarLoop]: 162 mSDtfsCounter, 496 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:52,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1463 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:34:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-09-12 21:34:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 466. [2024-09-12 21:34:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 374 states have (on average 1.0106951871657754) internal successors, (378), 375 states have internal predecessors, (378), 53 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:34:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 483 transitions. [2024-09-12 21:34:53,047 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 483 transitions. Word has length 517 [2024-09-12 21:34:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:53,047 INFO L474 AbstractCegarLoop]: Abstraction has 466 states and 483 transitions. [2024-09-12 21:34:53,047 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 2.694267515923567) internal successors, (423), 157 states have internal predecessors, (423), 103 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2024-09-12 21:34:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 483 transitions. [2024-09-12 21:34:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2024-09-12 21:34:53,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:53,049 INFO L216 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:53,063 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-12 21:34:53,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:53,250 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:53,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash 142970164, now seen corresponding path program 60 times [2024-09-12 21:34:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901761447] [2024-09-12 21:34:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:34:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:34:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:34:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:34:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:34:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:34:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:34:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:34:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:34:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:34:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:34:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:34:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:34:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:34:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:34:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:34:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:34:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:34:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:34:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:34:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:34:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:34:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:34:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:34:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:34:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:34:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:34:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:34:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:34:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:34:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:34:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:34:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:34:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:34:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:34:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:34:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:34:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:34:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:34:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:34:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:34:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:34:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:34:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:34:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:34:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:34:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:34:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:34:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:34:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:34:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2650 proven. 5102 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901761447] [2024-09-12 21:34:55,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901761447] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953431207] [2024-09-12 21:34:55,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:34:55,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:55,860 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 21:34:55,861 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 21:34:56,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-09-12 21:34:56,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:56,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-12 21:34:56,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:56,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-12 21:34:58,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953431207] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:58,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 60 [2024-09-12 21:34:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409816224] [2024-09-12 21:34:58,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:58,505 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 21:34:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 21:34:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1499, Invalid=2041, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:34:58,506 INFO L87 Difference]: Start difference. First operand 466 states and 483 transitions. Second operand has 60 states, 60 states have (on average 4.816666666666666) internal successors, (289), 58 states have internal predecessors, (289), 53 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:34:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:58,834 INFO L93 Difference]: Finished difference Result 485 states and 504 transitions. [2024-09-12 21:34:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 21:34:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.816666666666666) internal successors, (289), 58 states have internal predecessors, (289), 53 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 519 [2024-09-12 21:34:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:58,838 INFO L225 Difference]: With dead ends: 485 [2024-09-12 21:34:58,838 INFO L226 Difference]: Without dead ends: 483 [2024-09-12 21:34:58,839 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1084 SyntacticMatches, 103 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3510 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1505, Invalid=2155, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:34:58,839 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:58,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 658 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-09-12 21:34:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 478. [2024-09-12 21:34:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 383 states have (on average 1.010443864229765) internal successors, (387), 384 states have internal predecessors, (387), 55 states have call successors, (55), 40 states have call predecessors, (55), 39 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-12 21:34:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 496 transitions. [2024-09-12 21:34:58,908 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 496 transitions. Word has length 519 [2024-09-12 21:34:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:58,908 INFO L474 AbstractCegarLoop]: Abstraction has 478 states and 496 transitions. [2024-09-12 21:34:58,908 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.816666666666666) internal successors, (289), 58 states have internal predecessors, (289), 53 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:34:58,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 496 transitions. [2024-09-12 21:34:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-09-12 21:34:58,910 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:58,910 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:58,925 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 21:34:59,111 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-09-12 21:34:59,111 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:59,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash 230678550, now seen corresponding path program 61 times [2024-09-12 21:34:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049762814] [2024-09-12 21:34:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:35:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:35:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:35:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:35:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:35:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:35:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:35:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:35:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:35:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:35:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:35:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:35:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:35:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:35:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:35:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:35:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:35:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:35:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:35:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:35:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:35:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:35:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:35:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:35:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:35:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:35:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:35:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:35:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:35:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:35:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:35:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:35:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:35:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:35:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:35:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:35:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:35:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:35:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:35:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:35:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:35:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:35:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:35:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:35:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:35:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:35:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:35:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:35:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:35:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:35:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-09-12 21:35:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-09-12 21:35:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5359 proven. 2805 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 21:35:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049762814] [2024-09-12 21:35:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049762814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743282635] [2024-09-12 21:35:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:35:03,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:03,594 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 21:35:03,595 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 21:35:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:03,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-12 21:35:03,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5712 proven. 2652 refuted. 0 times theorem prover too weak. 5104 trivial. 0 not checked. [2024-09-12 21:35:07,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5510 proven. 2652 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2024-09-12 21:35:10,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743282635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:10,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:10,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106, 106] total 161 [2024-09-12 21:35:10,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865056413] [2024-09-12 21:35:10,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:10,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-09-12 21:35:10,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-09-12 21:35:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5781, Invalid=19979, Unknown=0, NotChecked=0, Total=25760 [2024-09-12 21:35:10,648 INFO L87 Difference]: Start difference. First operand 478 states and 496 transitions. Second operand has 161 states, 161 states have (on average 2.7267080745341614) internal successors, (439), 161 states have internal predecessors, (439), 106 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2024-09-12 21:35:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:14,229 INFO L93 Difference]: Finished difference Result 857 states and 1031 transitions. [2024-09-12 21:35:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-09-12 21:35:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 2.7267080745341614) internal successors, (439), 161 states have internal predecessors, (439), 106 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) Word has length 535 [2024-09-12 21:35:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:14,233 INFO L225 Difference]: With dead ends: 857 [2024-09-12 21:35:14,233 INFO L226 Difference]: Without dead ends: 636 [2024-09-12 21:35:14,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1021 SyntacticMatches, 102 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16927 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=11295, Invalid=33861, Unknown=0, NotChecked=0, Total=45156 [2024-09-12 21:35:14,237 INFO L434 NwaCegarLoop]: 165 mSDtfsCounter, 456 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:14,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1845 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:35:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-09-12 21:35:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 480. [2024-09-12 21:35:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 386 states have internal predecessors, (389), 55 states have call successors, (55), 40 states have call predecessors, (55), 39 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-12 21:35:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 498 transitions. [2024-09-12 21:35:14,302 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 498 transitions. Word has length 535 [2024-09-12 21:35:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:14,302 INFO L474 AbstractCegarLoop]: Abstraction has 480 states and 498 transitions. [2024-09-12 21:35:14,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 2.7267080745341614) internal successors, (439), 161 states have internal predecessors, (439), 106 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2024-09-12 21:35:14,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 498 transitions. [2024-09-12 21:35:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-09-12 21:35:14,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:14,305 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:14,318 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 21:35:14,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:14,505 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:14,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:14,506 INFO L85 PathProgramCache]: Analyzing trace with hash -464087525, now seen corresponding path program 62 times [2024-09-12 21:35:14,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:14,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357210395] [2024-09-12 21:35:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:35:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:35:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:35:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:35:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:35:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:35:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:35:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:35:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:35:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:35:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:35:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:35:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:35:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:35:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:35:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:35:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:35:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:35:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:35:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:35:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:35:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:35:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:35:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:35:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:35:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:35:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:35:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:35:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:35:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:35:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:35:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:35:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:35:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:35:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:35:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:35:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:35:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:35:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:35:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:35:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:35:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:35:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:35:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:35:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:35:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:35:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:35:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:35:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:35:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:35:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 5359 proven. 2909 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 21:35:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357210395] [2024-09-12 21:35:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357210395] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053055241] [2024-09-12 21:35:19,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:35:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:19,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:19,066 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 21:35:19,068 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 21:35:19,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:35:19,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:19,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-12 21:35:19,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 21:35:22,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-12 21:35:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053055241] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:28,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 57, 57] total 163 [2024-09-12 21:35:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862511929] [2024-09-12 21:35:28,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:28,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2024-09-12 21:35:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2024-09-12 21:35:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4405, Invalid=22001, Unknown=0, NotChecked=0, Total=26406 [2024-09-12 21:35:28,008 INFO L87 Difference]: Start difference. First operand 480 states and 498 transitions. Second operand has 163 states, 163 states have (on average 3.355828220858896) internal successors, (547), 162 states have internal predecessors, (547), 107 states have call successors, (108), 3 states have call predecessors, (108), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-09-12 21:35:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:33,504 INFO L93 Difference]: Finished difference Result 869 states and 1047 transitions. [2024-09-12 21:35:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2024-09-12 21:35:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 3.355828220858896) internal successors, (547), 162 states have internal predecessors, (547), 107 states have call successors, (108), 3 states have call predecessors, (108), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Word has length 537 [2024-09-12 21:35:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:33,508 INFO L225 Difference]: With dead ends: 869 [2024-09-12 21:35:33,508 INFO L226 Difference]: Without dead ends: 650 [2024-09-12 21:35:33,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1499 GetRequests, 1072 SyntacticMatches, 107 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48173 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=17495, Invalid=85867, Unknown=0, NotChecked=0, Total=103362 [2024-09-12 21:35:33,516 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 969 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:33,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 2559 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 21:35:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-09-12 21:35:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 490. [2024-09-12 21:35:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 393 states have (on average 1.0101781170483461) internal successors, (397), 394 states have internal predecessors, (397), 56 states have call successors, (56), 41 states have call predecessors, (56), 40 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-12 21:35:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 508 transitions. [2024-09-12 21:35:33,616 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 508 transitions. Word has length 537 [2024-09-12 21:35:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:33,616 INFO L474 AbstractCegarLoop]: Abstraction has 490 states and 508 transitions. [2024-09-12 21:35:33,616 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 3.355828220858896) internal successors, (547), 162 states have internal predecessors, (547), 107 states have call successors, (108), 3 states have call predecessors, (108), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-09-12 21:35:33,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 508 transitions. [2024-09-12 21:35:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-09-12 21:35:33,618 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:33,618 INFO L216 NwaCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:33,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-12 21:35:33,819 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:33,819 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:33,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash 475323601, now seen corresponding path program 63 times [2024-09-12 21:35:33,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128222896] [2024-09-12 21:35:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:33,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:35:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:35:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:35:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:35:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:35:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:35:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:35:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:35:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:35:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:35:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:35:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:35:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:35:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:35:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:35:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:35:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:35:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:35:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:35:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:35:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:35:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:35:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:35:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:35:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:35:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:35:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:35:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:35:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:35:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:35:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:35:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:35:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:35:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:35:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:35:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:35:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:35:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:35:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:35:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:35:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:35:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:35:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:35:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:35:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:35:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:35:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:35:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-09-12 21:35:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2024-09-12 21:35:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2024-09-12 21:35:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-09-12 21:35:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-09-12 21:35:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5568 proven. 3018 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-09-12 21:35:38,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:38,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128222896] [2024-09-12 21:35:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128222896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838019860] [2024-09-12 21:35:38,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:35:38,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:38,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:38,593 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 21:35:38,594 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 21:35:38,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2024-09-12 21:35:38,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:38,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-09-12 21:35:38,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-09-12 21:35:42,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2024-09-12 21:35:47,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838019860] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:47,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:47,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 58, 58] total 166 [2024-09-12 21:35:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000386181] [2024-09-12 21:35:47,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:47,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2024-09-12 21:35:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2024-09-12 21:35:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4569, Invalid=22821, Unknown=0, NotChecked=0, Total=27390 [2024-09-12 21:35:47,850 INFO L87 Difference]: Start difference. First operand 490 states and 508 transitions. Second operand has 166 states, 166 states have (on average 3.355421686746988) internal successors, (557), 165 states have internal predecessors, (557), 109 states have call successors, (110), 3 states have call predecessors, (110), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2024-09-12 21:35:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:53,585 INFO L93 Difference]: Finished difference Result 886 states and 1067 transitions. [2024-09-12 21:35:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-09-12 21:35:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.355421686746988) internal successors, (557), 165 states have internal predecessors, (557), 109 states have call successors, (110), 3 states have call predecessors, (110), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) Word has length 547 [2024-09-12 21:35:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:53,589 INFO L225 Difference]: With dead ends: 886 [2024-09-12 21:35:53,589 INFO L226 Difference]: Without dead ends: 663 [2024-09-12 21:35:53,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1527 GetRequests, 1092 SyntacticMatches, 109 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50027 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=18149, Invalid=89107, Unknown=0, NotChecked=0, Total=107256 [2024-09-12 21:35:53,595 INFO L434 NwaCegarLoop]: 169 mSDtfsCounter, 1029 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:53,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 2466 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 21:35:53,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-09-12 21:35:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 500. [2024-09-12 21:35:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 401 states have (on average 1.0099750623441397) internal successors, (405), 402 states have internal predecessors, (405), 57 states have call successors, (57), 42 states have call predecessors, (57), 41 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 21:35:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 518 transitions. [2024-09-12 21:35:53,663 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 518 transitions. Word has length 547 [2024-09-12 21:35:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:53,663 INFO L474 AbstractCegarLoop]: Abstraction has 500 states and 518 transitions. [2024-09-12 21:35:53,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.355421686746988) internal successors, (557), 165 states have internal predecessors, (557), 109 states have call successors, (110), 3 states have call predecessors, (110), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2024-09-12 21:35:53,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 518 transitions. [2024-09-12 21:35:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-09-12 21:35:53,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:53,666 INFO L216 NwaCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:53,680 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-12 21:35:53,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-09-12 21:35:53,867 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:53,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1345463481, now seen corresponding path program 64 times [2024-09-12 21:35:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:53,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362590358] [2024-09-12 21:35:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:35:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:35:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:35:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:35:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:35:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:35:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:35:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:35:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:35:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:35:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:35:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:35:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:35:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:35:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:35:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:35:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:35:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:35:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:35:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:35:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:35:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:35:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:35:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:35:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:35:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:35:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:35:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:35:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:35:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:35:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:35:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:35:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:35:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:35:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:35:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:35:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:35:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:35:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:35:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:35:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:35:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:35:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:35:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:35:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:35:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:35:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:35:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:35:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:35:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2024-09-12 21:35:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-09-12 21:35:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2024-09-12 21:35:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2024-09-12 21:35:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-09-12 21:35:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 5781 proven. 3129 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-09-12 21:35:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362590358] [2024-09-12 21:35:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362590358] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953935666] [2024-09-12 21:35:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:35:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:58,831 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 21:35:58,832 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 21:35:59,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:35:59,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:59,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-12 21:35:59,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-09-12 21:36:02,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-09-12 21:36:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953935666] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:08,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:08,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 59, 59] total 169 [2024-09-12 21:36:08,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692324355] [2024-09-12 21:36:08,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:08,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2024-09-12 21:36:08,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2024-09-12 21:36:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4736, Invalid=23656, Unknown=0, NotChecked=0, Total=28392 [2024-09-12 21:36:08,336 INFO L87 Difference]: Start difference. First operand 500 states and 518 transitions. Second operand has 169 states, 169 states have (on average 3.3550295857988166) internal successors, (567), 168 states have internal predecessors, (567), 111 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-09-12 21:36:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:14,265 INFO L93 Difference]: Finished difference Result 903 states and 1087 transitions. [2024-09-12 21:36:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2024-09-12 21:36:14,265 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 3.3550295857988166) internal successors, (567), 168 states have internal predecessors, (567), 111 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Word has length 557 [2024-09-12 21:36:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:14,269 INFO L225 Difference]: With dead ends: 903 [2024-09-12 21:36:14,269 INFO L226 Difference]: Without dead ends: 676 [2024-09-12 21:36:14,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1112 SyntacticMatches, 111 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51916 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=18815, Invalid=92407, Unknown=0, NotChecked=0, Total=111222 [2024-09-12 21:36:14,278 INFO L434 NwaCegarLoop]: 172 mSDtfsCounter, 1019 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:14,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2242 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 21:36:14,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-09-12 21:36:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 510. [2024-09-12 21:36:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 409 states have (on average 1.0097799511002445) internal successors, (413), 410 states have internal predecessors, (413), 58 states have call successors, (58), 43 states have call predecessors, (58), 42 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:36:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 528 transitions. [2024-09-12 21:36:14,377 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 528 transitions. Word has length 557 [2024-09-12 21:36:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:14,377 INFO L474 AbstractCegarLoop]: Abstraction has 510 states and 528 transitions. [2024-09-12 21:36:14,377 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 3.3550295857988166) internal successors, (567), 168 states have internal predecessors, (567), 111 states have call successors, (112), 3 states have call predecessors, (112), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-09-12 21:36:14,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 528 transitions. [2024-09-12 21:36:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-09-12 21:36:14,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:14,380 INFO L216 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:14,394 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-12 21:36:14,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:14,580 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1859625341, now seen corresponding path program 65 times [2024-09-12 21:36:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217497507] [2024-09-12 21:36:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:36:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:36:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:36:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:36:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:36:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:36:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:36:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:36:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:36:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:36:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:36:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:36:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:36:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:36:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:36:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:36:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:36:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:36:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:36:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:36:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:36:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:36:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:36:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:36:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:36:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:36:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:36:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:36:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:36:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:36:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:36:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:36:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:36:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:36:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:36:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:36:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:36:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:36:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:36:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:36:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:36:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:36:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:36:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:36:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:36:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:36:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:36:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:36:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:36:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-09-12 21:36:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-09-12 21:36:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-09-12 21:36:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-09-12 21:36:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-09-12 21:36:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-09-12 21:36:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 5998 proven. 3242 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:19,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:19,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217497507] [2024-09-12 21:36:19,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217497507] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:19,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392649118] [2024-09-12 21:36:19,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:36:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:19,707 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 21:36:19,708 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 21:36:20,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2024-09-12 21:36:20,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:20,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-09-12 21:36:20,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:24,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392649118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:27,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114, 114] total 172 [2024-09-12 21:36:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900575726] [2024-09-12 21:36:27,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:27,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2024-09-12 21:36:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2024-09-12 21:36:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6615, Invalid=22797, Unknown=0, NotChecked=0, Total=29412 [2024-09-12 21:36:27,614 INFO L87 Difference]: Start difference. First operand 510 states and 528 transitions. Second operand has 172 states, 172 states have (on average 2.691860465116279) internal successors, (463), 172 states have internal predecessors, (463), 113 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-09-12 21:36:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:31,705 INFO L93 Difference]: Finished difference Result 911 states and 1097 transitions. [2024-09-12 21:36:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-09-12 21:36:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 172 states have (on average 2.691860465116279) internal successors, (463), 172 states have internal predecessors, (463), 113 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 567 [2024-09-12 21:36:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:31,710 INFO L225 Difference]: With dead ends: 911 [2024-09-12 21:36:31,710 INFO L226 Difference]: Without dead ends: 680 [2024-09-12 21:36:31,713 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1415 GetRequests, 1079 SyntacticMatches, 110 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19352 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=13001, Invalid=38755, Unknown=0, NotChecked=0, Total=51756 [2024-09-12 21:36:31,713 INFO L434 NwaCegarLoop]: 177 mSDtfsCounter, 554 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:31,714 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1507 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 21:36:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-09-12 21:36:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 512. [2024-09-12 21:36:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 411 states have (on average 1.0097323600973236) internal successors, (415), 412 states have internal predecessors, (415), 58 states have call successors, (58), 43 states have call predecessors, (58), 42 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:36:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 530 transitions. [2024-09-12 21:36:31,800 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 530 transitions. Word has length 567 [2024-09-12 21:36:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:31,801 INFO L474 AbstractCegarLoop]: Abstraction has 512 states and 530 transitions. [2024-09-12 21:36:31,801 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 172 states have (on average 2.691860465116279) internal successors, (463), 172 states have internal predecessors, (463), 113 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-09-12 21:36:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 530 transitions. [2024-09-12 21:36:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-09-12 21:36:31,804 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:31,805 INFO L216 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:31,826 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-12 21:36:32,005 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:32,005 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:32,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:32,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1112343426, now seen corresponding path program 66 times [2024-09-12 21:36:32,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:32,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147321657] [2024-09-12 21:36:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:36:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:36:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:36:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:36:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:36:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:36:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:36:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:36:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:36:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:36:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:36:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:36:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:36:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:36:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:36:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:36:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:36:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:36:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:36:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:36:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:36:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:36:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:36:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:36:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:36:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:36:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:36:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:36:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:36:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:36:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:36:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:36:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:36:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:36:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:36:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:36:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:36:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:36:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:36:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:36:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:36:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:36:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:36:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:36:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:36:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:36:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:36:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:36:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:36:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:36:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2024-09-12 21:36:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2024-09-12 21:36:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-09-12 21:36:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-09-12 21:36:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3190 proven. 6162 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147321657] [2024-09-12 21:36:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147321657] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727115192] [2024-09-12 21:36:35,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:36:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:35,181 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 21:36:35,181 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 21:36:35,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2024-09-12 21:36:35,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:35,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-09-12 21:36:35,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:36,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2024-09-12 21:36:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727115192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:38,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:38,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 65 [2024-09-12 21:36:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617972300] [2024-09-12 21:36:38,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:38,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:36:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:36:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1784, Invalid=2376, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:36:38,318 INFO L87 Difference]: Start difference. First operand 512 states and 530 transitions. Second operand has 65 states, 65 states have (on average 4.8307692307692305) internal successors, (314), 63 states have internal predecessors, (314), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:36:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:38,699 INFO L93 Difference]: Finished difference Result 531 states and 551 transitions. [2024-09-12 21:36:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 21:36:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.8307692307692305) internal successors, (314), 63 states have internal predecessors, (314), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 569 [2024-09-12 21:36:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:38,702 INFO L225 Difference]: With dead ends: 531 [2024-09-12 21:36:38,702 INFO L226 Difference]: Without dead ends: 529 [2024-09-12 21:36:38,703 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1189 SyntacticMatches, 113 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4135 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1790, Invalid=2500, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:36:38,703 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 10 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:38,703 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 728 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-09-12 21:36:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 524. [2024-09-12 21:36:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 420 states have (on average 1.0095238095238095) internal successors, (424), 421 states have internal predecessors, (424), 60 states have call successors, (60), 44 states have call predecessors, (60), 43 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-12 21:36:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 543 transitions. [2024-09-12 21:36:38,778 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 543 transitions. Word has length 569 [2024-09-12 21:36:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:38,779 INFO L474 AbstractCegarLoop]: Abstraction has 524 states and 543 transitions. [2024-09-12 21:36:38,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.8307692307692305) internal successors, (314), 63 states have internal predecessors, (314), 58 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-12 21:36:38,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 543 transitions. [2024-09-12 21:36:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2024-09-12 21:36:38,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:38,782 INFO L216 NwaCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:38,796 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 21:36:38,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-12 21:36:38,982 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:38,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1180894620, now seen corresponding path program 67 times [2024-09-12 21:36:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097266758] [2024-09-12 21:36:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:36:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:36:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:36:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:36:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:36:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:36:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:36:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:36:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:36:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:36:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:36:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:36:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:36:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:36:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:36:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:36:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:36:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:36:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:36:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:36:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:36:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:36:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:36:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:36:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:36:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:36:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:36:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:36:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:36:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:36:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:36:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:36:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:36:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:36:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:36:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:36:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:36:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:36:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:36:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:36:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:36:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:36:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:36:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:36:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:36:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:36:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:36:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:36:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:36:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:36:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2024-09-12 21:36:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2024-09-12 21:36:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-09-12 21:36:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-09-12 21:36:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2024-09-12 21:36:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2024-09-12 21:36:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6444 proven. 3360 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-09-12 21:36:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:44,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097266758] [2024-09-12 21:36:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097266758] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585948035] [2024-09-12 21:36:44,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:36:44,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:44,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:44,347 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 21:36:44,348 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 21:36:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:44,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-09-12 21:36:44,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6832 proven. 3192 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2024-09-12 21:36:49,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6610 proven. 3192 refuted. 0 times theorem prover too weak. 6386 trivial. 0 not checked. [2024-09-12 21:36:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585948035] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:52,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:52,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116, 116] total 176 [2024-09-12 21:36:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930090823] [2024-09-12 21:36:52,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:52,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2024-09-12 21:36:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:52,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2024-09-12 21:36:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6906, Invalid=23894, Unknown=0, NotChecked=0, Total=30800 [2024-09-12 21:36:52,535 INFO L87 Difference]: Start difference. First operand 524 states and 543 transitions. Second operand has 176 states, 176 states have (on average 2.721590909090909) internal successors, (479), 176 states have internal predecessors, (479), 116 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2024-09-12 21:36:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:56,955 INFO L93 Difference]: Finished difference Result 938 states and 1128 transitions. [2024-09-12 21:36:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-09-12 21:36:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 2.721590909090909) internal successors, (479), 176 states have internal predecessors, (479), 116 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) Word has length 585 [2024-09-12 21:36:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:56,959 INFO L225 Difference]: With dead ends: 938 [2024-09-12 21:36:56,959 INFO L226 Difference]: Without dead ends: 697 [2024-09-12 21:36:56,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1459 GetRequests, 1116 SyntacticMatches, 112 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20267 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=13520, Invalid=40536, Unknown=0, NotChecked=0, Total=54056 [2024-09-12 21:36:56,963 INFO L434 NwaCegarLoop]: 180 mSDtfsCounter, 602 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:56,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1595 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:36:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-09-12 21:36:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 526. [2024-09-12 21:36:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 422 states have (on average 1.009478672985782) internal successors, (426), 423 states have internal predecessors, (426), 60 states have call successors, (60), 44 states have call predecessors, (60), 43 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-12 21:36:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 545 transitions. [2024-09-12 21:36:57,076 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 545 transitions. Word has length 585 [2024-09-12 21:36:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:57,076 INFO L474 AbstractCegarLoop]: Abstraction has 526 states and 545 transitions. [2024-09-12 21:36:57,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 2.721590909090909) internal successors, (479), 176 states have internal predecessors, (479), 116 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2024-09-12 21:36:57,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 545 transitions. [2024-09-12 21:36:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-09-12 21:36:57,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:57,079 INFO L216 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:57,093 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-12 21:36:57,279 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-12 21:36:57,280 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:57,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1215183575, now seen corresponding path program 68 times [2024-09-12 21:36:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076248665] [2024-09-12 21:36:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:37:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:37:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:37:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:37:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:37:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:37:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:37:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:37:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:37:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:37:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:37:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:37:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:37:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:37:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:37:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:37:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:37:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:37:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:37:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:37:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:37:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:37:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:37:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:37:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:37:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:37:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:37:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:37:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:37:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:37:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:37:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:37:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:37:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:37:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:37:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:37:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:37:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:37:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:37:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:37:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:37:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:37:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:37:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:37:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:37:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:37:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-09-12 21:37:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2024-09-12 21:37:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2024-09-12 21:37:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-09-12 21:37:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-09-12 21:37:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2024-09-12 21:37:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2024-09-12 21:37:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2024-09-12 21:37:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2024-09-12 21:37:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2024-09-12 21:37:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 6444 proven. 3474 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-09-12 21:37:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076248665] [2024-09-12 21:37:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076248665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340495347] [2024-09-12 21:37:02,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:37:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:02,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:02,818 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 21:37:02,819 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 21:37:03,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:37:03,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:03,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-09-12 21:37:03,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-09-12 21:37:06,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2024-09-12 21:37:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340495347] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:13,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:13,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 62, 62] total 178 [2024-09-12 21:37:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013214774] [2024-09-12 21:37:13,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:13,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2024-09-12 21:37:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2024-09-12 21:37:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=26251, Unknown=0, NotChecked=0, Total=31506 [2024-09-12 21:37:13,450 INFO L87 Difference]: Start difference. First operand 526 states and 545 transitions. Second operand has 178 states, 178 states have (on average 3.353932584269663) internal successors, (597), 177 states have internal predecessors, (597), 117 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2024-09-12 21:37:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:20,204 INFO L93 Difference]: Finished difference Result 950 states and 1144 transitions. [2024-09-12 21:37:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2024-09-12 21:37:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 178 states have (on average 3.353932584269663) internal successors, (597), 177 states have internal predecessors, (597), 117 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Word has length 587 [2024-09-12 21:37:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:20,209 INFO L225 Difference]: With dead ends: 950 [2024-09-12 21:37:20,209 INFO L226 Difference]: Without dead ends: 711 [2024-09-12 21:37:20,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1639 GetRequests, 1172 SyntacticMatches, 117 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57793 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=20885, Invalid=102667, Unknown=0, NotChecked=0, Total=123552 [2024-09-12 21:37:20,213 INFO L434 NwaCegarLoop]: 181 mSDtfsCounter, 1195 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:20,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 2469 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-12 21:37:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-09-12 21:37:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 536. [2024-09-12 21:37:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 430 states have (on average 1.0093023255813953) internal successors, (434), 431 states have internal predecessors, (434), 61 states have call successors, (61), 45 states have call predecessors, (61), 44 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 21:37:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 555 transitions. [2024-09-12 21:37:20,293 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 555 transitions. Word has length 587 [2024-09-12 21:37:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:20,293 INFO L474 AbstractCegarLoop]: Abstraction has 536 states and 555 transitions. [2024-09-12 21:37:20,294 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 178 states have (on average 3.353932584269663) internal successors, (597), 177 states have internal predecessors, (597), 117 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2024-09-12 21:37:20,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 555 transitions. [2024-09-12 21:37:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-09-12 21:37:20,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:20,298 INFO L216 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:20,317 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-12 21:37:20,498 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:20,498 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:20,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1005960545, now seen corresponding path program 69 times [2024-09-12 21:37:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236267728] [2024-09-12 21:37:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:37:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:37:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:37:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:37:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:37:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:37:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:37:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:37:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:37:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:37:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:37:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:37:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:37:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:37:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:37:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:37:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:37:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:37:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:37:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:37:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:37:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:37:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:37:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:37:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:37:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:37:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:37:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:37:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:37:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:37:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:37:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:37:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:37:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:37:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:37:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:37:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:37:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:37:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:37:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:37:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:37:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:37:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:37:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:37:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:37:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:37:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2024-09-12 21:37:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-09-12 21:37:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2024-09-12 21:37:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2024-09-12 21:37:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-09-12 21:37:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2024-09-12 21:37:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2024-09-12 21:37:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2024-09-12 21:37:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2024-09-12 21:37:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2024-09-12 21:37:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 6673 proven. 3593 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-09-12 21:37:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:26,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236267728] [2024-09-12 21:37:26,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236267728] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:26,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135982236] [2024-09-12 21:37:26,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:37:26,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:26,396 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 21:37:26,397 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 21:37:26,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2024-09-12 21:37:26,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:26,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-12 21:37:26,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-09-12 21:37:30,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-09-12 21:37:37,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135982236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:37,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:37,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 63, 63] total 181 [2024-09-12 21:37:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424840366] [2024-09-12 21:37:37,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:37,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2024-09-12 21:37:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2024-09-12 21:37:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5434, Invalid=27146, Unknown=0, NotChecked=0, Total=32580 [2024-09-12 21:37:37,405 INFO L87 Difference]: Start difference. First operand 536 states and 555 transitions. Second operand has 181 states, 181 states have (on average 3.3535911602209945) internal successors, (607), 180 states have internal predecessors, (607), 119 states have call successors, (120), 3 states have call predecessors, (120), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2024-09-12 21:37:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:44,376 INFO L93 Difference]: Finished difference Result 967 states and 1164 transitions. [2024-09-12 21:37:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2024-09-12 21:37:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 3.3535911602209945) internal successors, (607), 180 states have internal predecessors, (607), 119 states have call successors, (120), 3 states have call predecessors, (120), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) Word has length 597 [2024-09-12 21:37:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:44,381 INFO L225 Difference]: With dead ends: 967 [2024-09-12 21:37:44,381 INFO L226 Difference]: Without dead ends: 724 [2024-09-12 21:37:44,389 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 1192 SyntacticMatches, 119 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59822 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=21599, Invalid=106207, Unknown=0, NotChecked=0, Total=127806 [2024-09-12 21:37:44,389 INFO L434 NwaCegarLoop]: 184 mSDtfsCounter, 979 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 4461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:44,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2797 Invalid, 4461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-12 21:37:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-09-12 21:37:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 546. [2024-09-12 21:37:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 438 states have (on average 1.0091324200913243) internal successors, (442), 439 states have internal predecessors, (442), 62 states have call successors, (62), 46 states have call predecessors, (62), 45 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2024-09-12 21:37:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 565 transitions. [2024-09-12 21:37:44,470 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 565 transitions. Word has length 597 [2024-09-12 21:37:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:44,470 INFO L474 AbstractCegarLoop]: Abstraction has 546 states and 565 transitions. [2024-09-12 21:37:44,471 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 3.3535911602209945) internal successors, (607), 180 states have internal predecessors, (607), 119 states have call successors, (120), 3 states have call predecessors, (120), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2024-09-12 21:37:44,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 565 transitions. [2024-09-12 21:37:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-09-12 21:37:44,473 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:44,473 INFO L216 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:44,488 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-12 21:37:44,673 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:44,674 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:44,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1403242453, now seen corresponding path program 70 times [2024-09-12 21:37:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856548164] [2024-09-12 21:37:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:37:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:37:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:37:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:37:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:37:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:37:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:37:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:37:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:37:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:37:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:37:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:37:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:37:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:37:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:37:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:37:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:37:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:37:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:37:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:37:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:37:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:37:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:37:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:37:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:37:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:37:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:37:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:37:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:37:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:37:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:37:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:37:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:37:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:37:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:37:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:37:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:37:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:37:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:37:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:37:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:37:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:37:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:37:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:37:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:37:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:37:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:37:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:37:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-09-12 21:37:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-09-12 21:37:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-09-12 21:37:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-09-12 21:37:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-09-12 21:37:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-09-12 21:37:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-09-12 21:37:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2024-09-12 21:37:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2024-09-12 21:37:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2024-09-12 21:37:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-09-12 21:37:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 6906 proven. 3714 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2024-09-12 21:37:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856548164] [2024-09-12 21:37:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856548164] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93805360] [2024-09-12 21:37:50,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:37:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:50,839 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 21:37:50,840 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 21:37:51,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:37:51,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:51,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-09-12 21:37:51,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2024-09-12 21:37:55,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2024-09-12 21:38:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93805360] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:02,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:02,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 64, 64] total 184 [2024-09-12 21:38:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359585971] [2024-09-12 21:38:02,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:02,152 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2024-09-12 21:38:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2024-09-12 21:38:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5616, Invalid=28056, Unknown=0, NotChecked=0, Total=33672 [2024-09-12 21:38:02,154 INFO L87 Difference]: Start difference. First operand 546 states and 565 transitions. Second operand has 184 states, 184 states have (on average 3.3532608695652173) internal successors, (617), 183 states have internal predecessors, (617), 121 states have call successors, (122), 3 states have call predecessors, (122), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2024-09-12 21:38:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:09,317 INFO L93 Difference]: Finished difference Result 984 states and 1184 transitions. [2024-09-12 21:38:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2024-09-12 21:38:09,317 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 3.3532608695652173) internal successors, (617), 183 states have internal predecessors, (617), 121 states have call successors, (122), 3 states have call predecessors, (122), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Word has length 607 [2024-09-12 21:38:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:09,321 INFO L225 Difference]: With dead ends: 984 [2024-09-12 21:38:09,321 INFO L226 Difference]: Without dead ends: 737 [2024-09-12 21:38:09,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1695 GetRequests, 1212 SyntacticMatches, 121 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61886 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=22325, Invalid=109807, Unknown=0, NotChecked=0, Total=132132 [2024-09-12 21:38:09,325 INFO L434 NwaCegarLoop]: 187 mSDtfsCounter, 879 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:09,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 3036 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-12 21:38:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-09-12 21:38:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 556. [2024-09-12 21:38:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 446 states have (on average 1.0089686098654709) internal successors, (450), 447 states have internal predecessors, (450), 63 states have call successors, (63), 47 states have call predecessors, (63), 46 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:38:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 575 transitions. [2024-09-12 21:38:09,415 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 575 transitions. Word has length 607 [2024-09-12 21:38:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:09,415 INFO L474 AbstractCegarLoop]: Abstraction has 556 states and 575 transitions. [2024-09-12 21:38:09,416 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 3.3532608695652173) internal successors, (617), 183 states have internal predecessors, (617), 121 states have call successors, (122), 3 states have call predecessors, (122), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2024-09-12 21:38:09,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 575 transitions. [2024-09-12 21:38:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2024-09-12 21:38:09,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:09,418 INFO L216 NwaCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:09,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-12 21:38:09,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:09,619 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 252732619, now seen corresponding path program 71 times [2024-09-12 21:38:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406191553] [2024-09-12 21:38:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:09,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:38:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:38:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:38:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:38:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:38:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:38:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:38:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:38:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:38:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:38:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:38:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:38:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:38:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:38:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:38:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:38:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:38:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:38:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:38:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:38:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:38:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:38:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:38:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:38:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:38:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:38:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:38:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:38:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:38:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:38:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:38:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:38:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:38:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:38:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:38:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:38:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:38:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:38:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:38:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:38:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:38:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:38:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:38:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:38:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:38:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:38:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:38:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:38:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:38:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2024-09-12 21:38:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2024-09-12 21:38:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-09-12 21:38:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-09-12 21:38:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2024-09-12 21:38:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2024-09-12 21:38:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2024-09-12 21:38:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2024-09-12 21:38:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2024-09-12 21:38:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2024-09-12 21:38:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7143 proven. 3837 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406191553] [2024-09-12 21:38:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406191553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602526042] [2024-09-12 21:38:15,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:15,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:15,718 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 21:38:15,719 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 21:38:16,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-09-12 21:38:16,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:16,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-09-12 21:38:16,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:21,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602526042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:25,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124, 124] total 187 [2024-09-12 21:38:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443242828] [2024-09-12 21:38:25,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:25,047 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2024-09-12 21:38:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2024-09-12 21:38:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7815, Invalid=26967, Unknown=0, NotChecked=0, Total=34782 [2024-09-12 21:38:25,052 INFO L87 Difference]: Start difference. First operand 556 states and 575 transitions. Second operand has 187 states, 187 states have (on average 2.6898395721925135) internal successors, (503), 187 states have internal predecessors, (503), 123 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-09-12 21:38:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:30,303 INFO L93 Difference]: Finished difference Result 992 states and 1194 transitions. [2024-09-12 21:38:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-09-12 21:38:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 187 states, 187 states have (on average 2.6898395721925135) internal successors, (503), 187 states have internal predecessors, (503), 123 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Word has length 617 [2024-09-12 21:38:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:30,308 INFO L225 Difference]: With dead ends: 992 [2024-09-12 21:38:30,308 INFO L226 Difference]: Without dead ends: 741 [2024-09-12 21:38:30,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1174 SyntacticMatches, 120 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22912 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=15381, Invalid=45875, Unknown=0, NotChecked=0, Total=61256 [2024-09-12 21:38:30,313 INFO L434 NwaCegarLoop]: 192 mSDtfsCounter, 530 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:30,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1874 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:38:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-09-12 21:38:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 558. [2024-09-12 21:38:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 448 states have (on average 1.0089285714285714) internal successors, (452), 449 states have internal predecessors, (452), 63 states have call successors, (63), 47 states have call predecessors, (63), 46 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:38:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 577 transitions. [2024-09-12 21:38:30,401 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 577 transitions. Word has length 617 [2024-09-12 21:38:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:30,401 INFO L474 AbstractCegarLoop]: Abstraction has 558 states and 577 transitions. [2024-09-12 21:38:30,402 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 187 states, 187 states have (on average 2.6898395721925135) internal successors, (503), 187 states have internal predecessors, (503), 123 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-09-12 21:38:30,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 577 transitions. [2024-09-12 21:38:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-09-12 21:38:30,404 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:30,404 INFO L216 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:30,419 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 21:38:30,604 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:30,605 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1314970512, now seen corresponding path program 72 times [2024-09-12 21:38:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:30,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498752215] [2024-09-12 21:38:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:38:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:38:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:38:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:38:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:38:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:38:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:38:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:38:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:38:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:38:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:38:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:38:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:38:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:38:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:38:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:38:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:38:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:38:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:38:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:38:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:38:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:38:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:38:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:38:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:38:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:38:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:38:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:38:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:38:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:38:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:38:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:38:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:38:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:38:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:38:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:38:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:38:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:38:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:38:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:38:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:38:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:38:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:38:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:38:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:38:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-09-12 21:38:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2024-09-12 21:38:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2024-09-12 21:38:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-09-12 21:38:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-09-12 21:38:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2024-09-12 21:38:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2024-09-12 21:38:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2024-09-12 21:38:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2024-09-12 21:38:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2024-09-12 21:38:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2024-09-12 21:38:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2024-09-12 21:38:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2024-09-12 21:38:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2024-09-12 21:38:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3780 proven. 7322 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:34,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498752215] [2024-09-12 21:38:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498752215] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087912461] [2024-09-12 21:38:34,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:38:34,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:34,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:34,424 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 21:38:34,425 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 21:38:34,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-09-12 21:38:34,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:34,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-09-12 21:38:34,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:35,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-09-12 21:38:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087912461] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:37,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:37,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 70 [2024-09-12 21:38:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362497828] [2024-09-12 21:38:37,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:37,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:38:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:38:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2094, Invalid=2736, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:38:37,941 INFO L87 Difference]: Start difference. First operand 558 states and 577 transitions. Second operand has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 68 states have internal predecessors, (339), 63 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:38:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:38,408 INFO L93 Difference]: Finished difference Result 577 states and 598 transitions. [2024-09-12 21:38:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-12 21:38:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 68 states have internal predecessors, (339), 63 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 619 [2024-09-12 21:38:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:38,412 INFO L225 Difference]: With dead ends: 577 [2024-09-12 21:38:38,412 INFO L226 Difference]: Without dead ends: 575 [2024-09-12 21:38:38,412 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1486 GetRequests, 1294 SyntacticMatches, 123 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4810 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2100, Invalid=2870, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:38:38,413 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 7 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:38,413 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 889 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:38:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-09-12 21:38:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 570. [2024-09-12 21:38:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 457 states have (on average 1.0087527352297594) internal successors, (461), 458 states have internal predecessors, (461), 65 states have call successors, (65), 48 states have call predecessors, (65), 47 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 21:38:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 590 transitions. [2024-09-12 21:38:38,499 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 590 transitions. Word has length 619 [2024-09-12 21:38:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:38,499 INFO L474 AbstractCegarLoop]: Abstraction has 570 states and 590 transitions. [2024-09-12 21:38:38,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 68 states have internal predecessors, (339), 63 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 21:38:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 590 transitions. [2024-09-12 21:38:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-09-12 21:38:38,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:38,502 INFO L216 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:38,517 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 21:38:38,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:38,703 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:38,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -62196110, now seen corresponding path program 73 times [2024-09-12 21:38:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558676419] [2024-09-12 21:38:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:38:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:38:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:38:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:38:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:38:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:38:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:38:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:38:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:38:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:38:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:38:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:38:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:38:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:38:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:38:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:38:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:38:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:38:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:38:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:38:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:38:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:38:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:38:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:38:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:38:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:38:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:38:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:38:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:38:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:38:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:38:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:38:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:38:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:38:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:38:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:38:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:38:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:38:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:38:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:38:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:38:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:38:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:38:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:38:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:38:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-09-12 21:38:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2024-09-12 21:38:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2024-09-12 21:38:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-09-12 21:38:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-09-12 21:38:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2024-09-12 21:38:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2024-09-12 21:38:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2024-09-12 21:38:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2024-09-12 21:38:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2024-09-12 21:38:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2024-09-12 21:38:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2024-09-12 21:38:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2024-09-12 21:38:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2024-09-12 21:38:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2024-09-12 21:38:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2024-09-12 21:38:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7629 proven. 3965 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-09-12 21:38:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558676419] [2024-09-12 21:38:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558676419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601254943] [2024-09-12 21:38:45,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:38:45,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:45,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:45,143 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 21:38:45,143 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 21:38:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:45,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-09-12 21:38:45,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 8052 proven. 3782 refuted. 0 times theorem prover too weak. 7324 trivial. 0 not checked. [2024-09-12 21:38:50,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7810 proven. 3782 refuted. 0 times theorem prover too weak. 7566 trivial. 0 not checked. [2024-09-12 21:38:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601254943] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:54,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 126, 126] total 191 [2024-09-12 21:38:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550883295] [2024-09-12 21:38:54,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:54,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2024-09-12 21:38:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2024-09-12 21:38:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8131, Invalid=28159, Unknown=0, NotChecked=0, Total=36290 [2024-09-12 21:38:54,758 INFO L87 Difference]: Start difference. First operand 570 states and 590 transitions. Second operand has 191 states, 191 states have (on average 2.717277486910995) internal successors, (519), 191 states have internal predecessors, (519), 126 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2024-09-12 21:39:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:00,143 INFO L93 Difference]: Finished difference Result 1019 states and 1225 transitions. [2024-09-12 21:39:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-09-12 21:39:00,144 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 2.717277486910995) internal successors, (519), 191 states have internal predecessors, (519), 126 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) Word has length 635 [2024-09-12 21:39:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:00,150 INFO L225 Difference]: With dead ends: 1019 [2024-09-12 21:39:00,150 INFO L226 Difference]: Without dead ends: 758 [2024-09-12 21:39:00,154 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1584 GetRequests, 1211 SyntacticMatches, 122 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23907 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=15945, Invalid=47811, Unknown=0, NotChecked=0, Total=63756 [2024-09-12 21:39:00,154 INFO L434 NwaCegarLoop]: 195 mSDtfsCounter, 670 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:00,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1474 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 21:39:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-09-12 21:39:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 572. [2024-09-12 21:39:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 459 states have (on average 1.008714596949891) internal successors, (463), 460 states have internal predecessors, (463), 65 states have call successors, (65), 48 states have call predecessors, (65), 47 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 21:39:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 592 transitions. [2024-09-12 21:39:00,244 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 592 transitions. Word has length 635 [2024-09-12 21:39:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:00,244 INFO L474 AbstractCegarLoop]: Abstraction has 572 states and 592 transitions. [2024-09-12 21:39:00,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 2.717277486910995) internal successors, (519), 191 states have internal predecessors, (519), 126 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2024-09-12 21:39:00,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 592 transitions. [2024-09-12 21:39:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-09-12 21:39:00,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:00,247 INFO L216 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:00,261 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 21:39:00,447 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-09-12 21:39:00,447 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:00,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash -725146121, now seen corresponding path program 74 times [2024-09-12 21:39:00,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:00,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494396552] [2024-09-12 21:39:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:00,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:39:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:39:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:39:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:39:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:39:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:39:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:39:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:39:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:39:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:39:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:39:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:39:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:39:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:39:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:39:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:39:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:39:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:39:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:39:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:39:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:39:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:39:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:39:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:39:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:39:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:39:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:39:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:39:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:39:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:39:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:39:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:39:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:39:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:39:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:39:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:39:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:39:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:39:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:39:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:39:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:39:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:39:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:39:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:39:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:39:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:39:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:39:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2024-09-12 21:39:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-09-12 21:39:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2024-09-12 21:39:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2024-09-12 21:39:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-09-12 21:39:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2024-09-12 21:39:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2024-09-12 21:39:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2024-09-12 21:39:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2024-09-12 21:39:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2024-09-12 21:39:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2024-09-12 21:39:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2024-09-12 21:39:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2024-09-12 21:39:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2024-09-12 21:39:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2024-09-12 21:39:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 7629 proven. 4089 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-09-12 21:39:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:07,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494396552] [2024-09-12 21:39:07,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494396552] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:07,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733740435] [2024-09-12 21:39:07,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:39:07,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:07,040 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 21:39:07,040 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 21:39:07,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:39:07,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:07,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 21:39:07,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-09-12 21:39:11,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-09-12 21:39:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733740435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:19,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 67, 67] total 193 [2024-09-12 21:39:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535500828] [2024-09-12 21:39:19,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:19,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-09-12 21:39:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-09-12 21:39:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6180, Invalid=30876, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 21:39:19,411 INFO L87 Difference]: Start difference. First operand 572 states and 592 transitions. Second operand has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 192 states have internal predecessors, (647), 127 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2024-09-12 21:39:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:27,444 INFO L93 Difference]: Finished difference Result 1031 states and 1241 transitions. [2024-09-12 21:39:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-09-12 21:39:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 192 states have internal predecessors, (647), 127 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Word has length 637 [2024-09-12 21:39:27,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:27,449 INFO L225 Difference]: With dead ends: 1031 [2024-09-12 21:39:27,449 INFO L226 Difference]: Without dead ends: 772 [2024-09-12 21:39:27,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1272 SyntacticMatches, 127 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68288 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=24575, Invalid=120967, Unknown=0, NotChecked=0, Total=145542 [2024-09-12 21:39:27,459 INFO L434 NwaCegarLoop]: 196 mSDtfsCounter, 1043 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 4693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:27,460 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 3251 Invalid, 4693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 21:39:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-09-12 21:39:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 582. [2024-09-12 21:39:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 467 states have (on average 1.0085653104925054) internal successors, (471), 468 states have internal predecessors, (471), 66 states have call successors, (66), 49 states have call predecessors, (66), 48 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-12 21:39:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 602 transitions. [2024-09-12 21:39:27,553 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 602 transitions. Word has length 637 [2024-09-12 21:39:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:27,553 INFO L474 AbstractCegarLoop]: Abstraction has 582 states and 602 transitions. [2024-09-12 21:39:27,554 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 192 states have internal predecessors, (647), 127 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2024-09-12 21:39:27,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 602 transitions. [2024-09-12 21:39:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2024-09-12 21:39:27,556 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:27,556 INFO L216 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:27,571 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-12 21:39:27,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:27,757 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:27,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1947298349, now seen corresponding path program 75 times [2024-09-12 21:39:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360205520] [2024-09-12 21:39:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:39:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:39:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:39:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:39:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:39:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:39:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:39:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:39:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:39:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:39:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:39:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:39:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:39:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:39:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:39:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:39:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:39:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:39:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:39:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:39:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:39:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:39:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:39:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:39:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:39:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:39:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:39:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:39:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:39:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:39:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:39:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:39:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:39:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:39:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:39:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:39:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:39:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:39:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:39:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:39:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:39:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:39:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:39:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:39:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:39:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:39:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:39:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-09-12 21:39:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-09-12 21:39:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-09-12 21:39:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-09-12 21:39:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-09-12 21:39:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-09-12 21:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-09-12 21:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2024-09-12 21:39:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2024-09-12 21:39:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2024-09-12 21:39:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-09-12 21:39:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2024-09-12 21:39:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2024-09-12 21:39:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2024-09-12 21:39:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2024-09-12 21:39:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2024-09-12 21:39:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 7878 proven. 4218 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-09-12 21:39:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360205520] [2024-09-12 21:39:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360205520] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656621126] [2024-09-12 21:39:34,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:39:34,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:34,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:34,638 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 21:39:34,639 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 21:39:35,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2024-09-12 21:39:35,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:35,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-09-12 21:39:35,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-09-12 21:39:39,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-09-12 21:39:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656621126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:47,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 68, 68] total 196 [2024-09-12 21:39:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974653551] [2024-09-12 21:39:47,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:47,632 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-09-12 21:39:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-09-12 21:39:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6374, Invalid=31846, Unknown=0, NotChecked=0, Total=38220 [2024-09-12 21:39:47,634 INFO L87 Difference]: Start difference. First operand 582 states and 602 transitions. Second operand has 196 states, 196 states have (on average 3.3520408163265305) internal successors, (657), 195 states have internal predecessors, (657), 129 states have call successors, (130), 3 states have call predecessors, (130), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2024-09-12 21:39:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:55,941 INFO L93 Difference]: Finished difference Result 1048 states and 1261 transitions. [2024-09-12 21:39:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2024-09-12 21:39:55,942 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 3.3520408163265305) internal successors, (657), 195 states have internal predecessors, (657), 129 states have call successors, (130), 3 states have call predecessors, (130), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) Word has length 647 [2024-09-12 21:39:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:55,947 INFO L225 Difference]: With dead ends: 1048 [2024-09-12 21:39:55,947 INFO L226 Difference]: Without dead ends: 785 [2024-09-12 21:39:55,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1807 GetRequests, 1292 SyntacticMatches, 129 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70492 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=25349, Invalid=124807, Unknown=0, NotChecked=0, Total=150156 [2024-09-12 21:39:55,957 INFO L434 NwaCegarLoop]: 199 mSDtfsCounter, 1031 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:55,957 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 3190 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 21:39:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-09-12 21:39:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 592. [2024-09-12 21:39:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 475 states have (on average 1.0084210526315789) internal successors, (479), 476 states have internal predecessors, (479), 67 states have call successors, (67), 50 states have call predecessors, (67), 49 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-12 21:39:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 612 transitions. [2024-09-12 21:39:56,102 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 612 transitions. Word has length 647 [2024-09-12 21:39:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:56,103 INFO L474 AbstractCegarLoop]: Abstraction has 592 states and 612 transitions. [2024-09-12 21:39:56,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 3.3520408163265305) internal successors, (657), 195 states have internal predecessors, (657), 129 states have call successors, (130), 3 states have call predecessors, (130), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2024-09-12 21:39:56,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 612 transitions. [2024-09-12 21:39:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2024-09-12 21:39:56,107 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:56,107 INFO L216 NwaCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:56,127 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 21:39:56,308 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:56,308 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:56,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash 992937507, now seen corresponding path program 76 times [2024-09-12 21:39:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:56,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071611376] [2024-09-12 21:39:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:40:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:40:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:40:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:40:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:40:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:40:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:40:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:40:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:40:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:40:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:40:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:40:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:40:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:40:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:40:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:40:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:40:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:40:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:40:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:40:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:40:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:40:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:40:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:40:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:40:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:40:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:40:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:40:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:40:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:40:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:40:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:40:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:40:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:40:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:40:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:40:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:40:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:40:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:40:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:40:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:40:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:40:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:40:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:40:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:40:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:40:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:40:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:40:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2024-09-12 21:40:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2024-09-12 21:40:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-09-12 21:40:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-09-12 21:40:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2024-09-12 21:40:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2024-09-12 21:40:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2024-09-12 21:40:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2024-09-12 21:40:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2024-09-12 21:40:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2024-09-12 21:40:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2024-09-12 21:40:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2024-09-12 21:40:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2024-09-12 21:40:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2024-09-12 21:40:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2024-09-12 21:40:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 8131 proven. 4349 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-09-12 21:40:03,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071611376] [2024-09-12 21:40:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071611376] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781838216] [2024-09-12 21:40:03,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:40:03,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:03,457 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 21:40:03,457 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 21:40:03,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:40:03,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:03,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-09-12 21:40:03,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-09-12 21:40:08,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-09-12 21:40:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781838216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:16,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:16,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 69, 69] total 199 [2024-09-12 21:40:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035671238] [2024-09-12 21:40:16,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:16,709 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2024-09-12 21:40:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2024-09-12 21:40:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6571, Invalid=32831, Unknown=0, NotChecked=0, Total=39402 [2024-09-12 21:40:16,712 INFO L87 Difference]: Start difference. First operand 592 states and 612 transitions. Second operand has 199 states, 199 states have (on average 3.351758793969849) internal successors, (667), 198 states have internal predecessors, (667), 131 states have call successors, (132), 3 states have call predecessors, (132), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-09-12 21:40:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:25,361 INFO L93 Difference]: Finished difference Result 1065 states and 1281 transitions. [2024-09-12 21:40:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-09-12 21:40:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 3.351758793969849) internal successors, (667), 198 states have internal predecessors, (667), 131 states have call successors, (132), 3 states have call predecessors, (132), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Word has length 657 [2024-09-12 21:40:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:25,366 INFO L225 Difference]: With dead ends: 1065 [2024-09-12 21:40:25,366 INFO L226 Difference]: Without dead ends: 798 [2024-09-12 21:40:25,373 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1835 GetRequests, 1312 SyntacticMatches, 131 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72731 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=26135, Invalid=128707, Unknown=0, NotChecked=0, Total=154842 [2024-09-12 21:40:25,373 INFO L434 NwaCegarLoop]: 202 mSDtfsCounter, 1151 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 4523 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 4523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:25,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 3553 Invalid, 5286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 4523 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-12 21:40:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-09-12 21:40:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 602. [2024-09-12 21:40:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 483 states have (on average 1.0082815734989647) internal successors, (487), 484 states have internal predecessors, (487), 68 states have call successors, (68), 51 states have call predecessors, (68), 50 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:40:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 622 transitions. [2024-09-12 21:40:25,472 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 622 transitions. Word has length 657 [2024-09-12 21:40:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:25,472 INFO L474 AbstractCegarLoop]: Abstraction has 602 states and 622 transitions. [2024-09-12 21:40:25,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 3.351758793969849) internal successors, (667), 198 states have internal predecessors, (667), 131 states have call successors, (132), 3 states have call predecessors, (132), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-09-12 21:40:25,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 622 transitions. [2024-09-12 21:40:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-09-12 21:40:25,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:25,476 INFO L216 NwaCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:25,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-12 21:40:25,676 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-12 21:40:25,677 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:25,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1938945575, now seen corresponding path program 77 times [2024-09-12 21:40:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160582869] [2024-09-12 21:40:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:40:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:40:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:40:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:40:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 21:40:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 21:40:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 21:40:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 21:40:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 21:40:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 21:40:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 21:40:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 21:40:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 21:40:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 21:40:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 21:40:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 21:40:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 21:40:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 21:40:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 21:40:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 21:40:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 21:40:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 21:40:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 21:40:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 21:40:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 21:40:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-12 21:40:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-12 21:40:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-12 21:40:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-12 21:40:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-12 21:40:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-12 21:40:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-12 21:40:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-12 21:40:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-12 21:40:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-12 21:40:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-12 21:40:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-12 21:40:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-12 21:40:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 21:40:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-12 21:40:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-12 21:40:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-12 21:40:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-12 21:40:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-12 21:40:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-09-12 21:40:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2024-09-12 21:40:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2024-09-12 21:40:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-09-12 21:40:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-09-12 21:40:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2024-09-12 21:40:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2024-09-12 21:40:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2024-09-12 21:40:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2024-09-12 21:40:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2024-09-12 21:40:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:32,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2024-09-12 21:40:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2024-09-12 21:40:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2024-09-12 21:40:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2024-09-12 21:40:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2024-09-12 21:40:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2024-09-12 21:40:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2024-09-12 21:40:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2024-09-12 21:40:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2024-09-12 21:40:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2024-09-12 21:40:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8388 proven. 4482 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160582869] [2024-09-12 21:40:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160582869] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111794225] [2024-09-12 21:40:33,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:40:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:33,011 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 21:40:33,011 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 21:40:33,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2024-09-12 21:40:33,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:33,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-09-12 21:40:33,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:39,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111794225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:43,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134, 134] total 202 [2024-09-12 21:40:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111254849] [2024-09-12 21:40:43,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:43,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 202 states [2024-09-12 21:40:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2024-09-12 21:40:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9115, Invalid=31487, Unknown=0, NotChecked=0, Total=40602 [2024-09-12 21:40:43,906 INFO L87 Difference]: Start difference. First operand 602 states and 622 transitions. Second operand has 202 states, 202 states have (on average 2.6881188118811883) internal successors, (543), 202 states have internal predecessors, (543), 133 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-09-12 21:40:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:50,433 INFO L93 Difference]: Finished difference Result 1073 states and 1291 transitions. [2024-09-12 21:40:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-09-12 21:40:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 202 states, 202 states have (on average 2.6881188118811883) internal successors, (543), 202 states have internal predecessors, (543), 133 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Word has length 667 [2024-09-12 21:40:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:50,438 INFO L225 Difference]: With dead ends: 1073 [2024-09-12 21:40:50,438 INFO L226 Difference]: Without dead ends: 802 [2024-09-12 21:40:50,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1665 GetRequests, 1269 SyntacticMatches, 130 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26772 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=17961, Invalid=53595, Unknown=0, NotChecked=0, Total=71556 [2024-09-12 21:40:50,444 INFO L434 NwaCegarLoop]: 207 mSDtfsCounter, 542 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:50,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2169 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 21:40:50,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-09-12 21:40:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 604. [2024-09-12 21:40:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 485 states have (on average 1.0082474226804123) internal successors, (489), 486 states have internal predecessors, (489), 68 states have call successors, (68), 51 states have call predecessors, (68), 50 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:40:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 624 transitions. [2024-09-12 21:40:50,546 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 624 transitions. Word has length 667 [2024-09-12 21:40:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:50,546 INFO L474 AbstractCegarLoop]: Abstraction has 604 states and 624 transitions. [2024-09-12 21:40:50,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 202 states, 202 states have (on average 2.6881188118811883) internal successors, (543), 202 states have internal predecessors, (543), 133 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-09-12 21:40:50,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 624 transitions. [2024-09-12 21:40:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2024-09-12 21:40:50,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:50,550 INFO L216 NwaCegarLoop]: trace histogram [67, 66, 66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:50,564 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-12 21:40:50,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-09-12 21:40:50,750 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1904403806, now seen corresponding path program 78 times [2024-09-12 21:40:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543858319] [2024-09-12 21:40:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:40:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:40:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:40:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:40:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:40:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:40:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:40:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:40:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:40:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:40:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:40:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:40:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:40:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:40:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:40:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:40:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:40:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:40:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:40:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:40:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:40:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:40:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:40:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:40:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:40:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:40:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:40:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:40:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:40:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:40:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:40:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:40:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:40:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:40:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:40:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:40:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:40:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:40:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:40:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:40:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:40:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:40:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:40:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:40:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:40:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:40:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2024-09-12 21:40:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-09-12 21:40:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2024-09-12 21:40:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2024-09-12 21:40:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-09-12 21:40:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2024-09-12 21:40:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2024-09-12 21:40:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2024-09-12 21:40:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2024-09-12 21:40:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2024-09-12 21:40:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2024-09-12 21:40:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2024-09-12 21:40:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2024-09-12 21:40:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2024-09-12 21:40:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2024-09-12 21:40:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2024-09-12 21:40:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2024-09-12 21:40:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2024-09-12 21:40:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2024-09-12 21:40:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4420 proven. 8582 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543858319] [2024-09-12 21:40:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543858319] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447190344] [2024-09-12 21:40:55,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:40:55,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:55,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:55,448 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 21:40:55,450 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 21:40:56,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2024-09-12 21:40:56,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:56,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-09-12 21:40:56,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:56,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-09-12 21:40:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447190344] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:59,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:59,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 75 [2024-09-12 21:40:59,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922550283] [2024-09-12 21:40:59,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:59,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:40:59,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:40:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2429, Invalid=3121, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:40:59,544 INFO L87 Difference]: Start difference. First operand 604 states and 624 transitions. Second operand has 75 states, 75 states have (on average 4.8533333333333335) internal successors, (364), 73 states have internal predecessors, (364), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:41:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:00,028 INFO L93 Difference]: Finished difference Result 623 states and 645 transitions. [2024-09-12 21:41:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-12 21:41:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.8533333333333335) internal successors, (364), 73 states have internal predecessors, (364), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 669 [2024-09-12 21:41:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:00,033 INFO L225 Difference]: With dead ends: 623 [2024-09-12 21:41:00,034 INFO L226 Difference]: Without dead ends: 621 [2024-09-12 21:41:00,034 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1606 GetRequests, 1399 SyntacticMatches, 133 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5535 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2435, Invalid=3265, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:41:00,035 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 11 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:00,035 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 850 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-09-12 21:41:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 616. [2024-09-12 21:41:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 494 states have (on average 1.008097165991903) internal successors, (498), 495 states have internal predecessors, (498), 70 states have call successors, (70), 52 states have call predecessors, (70), 51 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-12 21:41:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 637 transitions. [2024-09-12 21:41:00,170 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 637 transitions. Word has length 669 [2024-09-12 21:41:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:00,170 INFO L474 AbstractCegarLoop]: Abstraction has 616 states and 637 transitions. [2024-09-12 21:41:00,171 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.8533333333333335) internal successors, (364), 73 states have internal predecessors, (364), 68 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-12 21:41:00,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 637 transitions. [2024-09-12 21:41:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2024-09-12 21:41:00,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:00,173 INFO L216 NwaCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:00,188 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 21:41:00,374 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:00,374 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2095817792, now seen corresponding path program 79 times [2024-09-12 21:41:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275713848] [2024-09-12 21:41:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:41:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:41:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:41:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 21:41:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 21:41:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 21:41:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 21:41:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 21:41:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 21:41:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 21:41:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 21:41:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 21:41:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 21:41:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 21:41:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 21:41:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 21:41:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 21:41:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 21:41:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 21:41:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 21:41:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 21:41:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 21:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 21:41:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 21:41:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 21:41:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 21:41:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 21:41:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 21:41:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 21:41:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 21:41:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 21:41:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-12 21:41:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-12 21:41:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-12 21:41:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-12 21:41:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-12 21:41:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-12 21:41:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-12 21:41:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-12 21:41:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-12 21:41:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-12 21:41:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-12 21:41:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2024-09-12 21:41:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-09-12 21:41:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2024-09-12 21:41:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-09-12 21:41:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2024-09-12 21:41:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-09-12 21:41:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2024-09-12 21:41:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2024-09-12 21:41:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-09-12 21:41:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2024-09-12 21:41:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2024-09-12 21:41:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2024-09-12 21:41:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2024-09-12 21:41:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2024-09-12 21:41:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2024-09-12 21:41:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2024-09-12 21:41:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2024-09-12 21:41:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2024-09-12 21:41:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2024-09-12 21:41:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2024-09-12 21:41:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2024-09-12 21:41:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2024-09-12 21:41:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2024-09-12 21:41:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2024-09-12 21:41:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2024-09-12 21:41:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 8914 proven. 4620 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-09-12 21:41:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275713848] [2024-09-12 21:41:07,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275713848] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568835286] [2024-09-12 21:41:07,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:41:07,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:07,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:07,970 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 21:41:07,970 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 21:41:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:08,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-12 21:41:08,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9372 proven. 4422 refuted. 0 times theorem prover too weak. 8584 trivial. 0 not checked. [2024-09-12 21:41:14,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9110 proven. 4422 refuted. 0 times theorem prover too weak. 8846 trivial. 0 not checked. [2024-09-12 21:41:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568835286] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:19,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:19,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 136, 136] total 206 [2024-09-12 21:41:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100111170] [2024-09-12 21:41:19,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:19,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2024-09-12 21:41:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2024-09-12 21:41:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9456, Invalid=32774, Unknown=0, NotChecked=0, Total=42230 [2024-09-12 21:41:19,028 INFO L87 Difference]: Start difference. First operand 616 states and 637 transitions. Second operand has 206 states, 206 states have (on average 2.7135922330097086) internal successors, (559), 206 states have internal predecessors, (559), 136 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2024-09-12 21:41:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:25,546 INFO L93 Difference]: Finished difference Result 1100 states and 1322 transitions. [2024-09-12 21:41:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-09-12 21:41:25,547 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 2.7135922330097086) internal successors, (559), 206 states have internal predecessors, (559), 136 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) Word has length 685 [2024-09-12 21:41:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:25,551 INFO L225 Difference]: With dead ends: 1100 [2024-09-12 21:41:25,551 INFO L226 Difference]: Without dead ends: 819 [2024-09-12 21:41:25,557 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1709 GetRequests, 1306 SyntacticMatches, 132 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27847 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=18570, Invalid=55686, Unknown=0, NotChecked=0, Total=74256 [2024-09-12 21:41:25,557 INFO L434 NwaCegarLoop]: 210 mSDtfsCounter, 644 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:25,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1558 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 21:41:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-09-12 21:41:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 618. [2024-09-12 21:41:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.0080645161290323) internal successors, (500), 497 states have internal predecessors, (500), 70 states have call successors, (70), 52 states have call predecessors, (70), 51 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-12 21:41:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 639 transitions. [2024-09-12 21:41:25,663 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 639 transitions. Word has length 685 [2024-09-12 21:41:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:25,663 INFO L474 AbstractCegarLoop]: Abstraction has 618 states and 639 transitions. [2024-09-12 21:41:25,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 2.7135922330097086) internal successors, (559), 206 states have internal predecessors, (559), 136 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2024-09-12 21:41:25,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 639 transitions. [2024-09-12 21:41:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2024-09-12 21:41:25,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:25,666 INFO L216 NwaCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:25,681 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 21:41:25,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:25,867 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:25,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1613006981, now seen corresponding path program 80 times [2024-09-12 21:41:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105873941] [2024-09-12 21:41:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:41:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:41:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:41:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:41:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:41:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:41:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:41:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:41:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 21:41:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 21:41:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 21:41:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 21:41:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 21:41:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 21:41:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 21:41:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 21:41:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 21:41:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 21:41:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 21:41:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 21:41:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 21:41:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 21:41:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 21:41:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 21:41:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 21:41:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 21:41:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 21:41:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 21:41:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 21:41:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-12 21:41:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-12 21:41:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-12 21:41:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-12 21:41:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-12 21:41:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-12 21:41:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-12 21:41:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-12 21:41:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-12 21:41:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-12 21:41:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-12 21:41:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-12 21:41:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-12 21:41:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-09-12 21:41:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-09-12 21:41:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-09-12 21:41:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-09-12 21:41:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-09-12 21:41:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-09-12 21:41:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-09-12 21:41:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-09-12 21:41:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-09-12 21:41:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-09-12 21:41:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-09-12 21:41:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2024-09-12 21:41:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2024-09-12 21:41:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2024-09-12 21:41:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-09-12 21:41:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2024-09-12 21:41:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2024-09-12 21:41:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2024-09-12 21:41:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2024-09-12 21:41:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2024-09-12 21:41:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2024-09-12 21:41:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2024-09-12 21:41:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2024-09-12 21:41:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2024-09-12 21:41:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2024-09-12 21:41:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 8914 proven. 4754 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-09-12 21:41:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105873941] [2024-09-12 21:41:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105873941] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490981791] [2024-09-12 21:41:33,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:41:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:33,609 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 21:41:33,610 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 21:41:34,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:41:34,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:34,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-09-12 21:41:34,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-09-12 21:41:38,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-09-12 21:41:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490981791] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:47,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:47,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 72, 72] total 208 [2024-09-12 21:41:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903491044] [2024-09-12 21:41:47,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:47,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2024-09-12 21:41:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2024-09-12 21:41:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7180, Invalid=35876, Unknown=0, NotChecked=0, Total=43056 [2024-09-12 21:41:47,972 INFO L87 Difference]: Start difference. First operand 618 states and 639 transitions. Second operand has 208 states, 208 states have (on average 3.3509615384615383) internal successors, (697), 207 states have internal predecessors, (697), 137 states have call successors, (138), 3 states have call predecessors, (138), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-09-12 21:41:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:57,513 INFO L93 Difference]: Finished difference Result 1112 states and 1338 transitions. [2024-09-12 21:41:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2024-09-12 21:41:57,514 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 208 states have (on average 3.3509615384615383) internal successors, (697), 207 states have internal predecessors, (697), 137 states have call successors, (138), 3 states have call predecessors, (138), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) Word has length 687 [2024-09-12 21:41:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:57,518 INFO L225 Difference]: With dead ends: 1112 [2024-09-12 21:41:57,518 INFO L226 Difference]: Without dead ends: 833 [2024-09-12 21:41:57,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1372 SyntacticMatches, 137 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79658 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=28565, Invalid=140767, Unknown=0, NotChecked=0, Total=169332 [2024-09-12 21:41:57,525 INFO L434 NwaCegarLoop]: 211 mSDtfsCounter, 1219 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:57,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 3207 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 21:41:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-09-12 21:41:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 628. [2024-09-12 21:41:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 504 states have (on average 1.007936507936508) internal successors, (508), 505 states have internal predecessors, (508), 71 states have call successors, (71), 53 states have call predecessors, (71), 52 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 21:41:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 649 transitions. [2024-09-12 21:41:57,646 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 649 transitions. Word has length 687 [2024-09-12 21:41:57,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:57,646 INFO L474 AbstractCegarLoop]: Abstraction has 628 states and 649 transitions. [2024-09-12 21:41:57,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 208 states have (on average 3.3509615384615383) internal successors, (697), 207 states have internal predecessors, (697), 137 states have call successors, (138), 3 states have call predecessors, (138), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-09-12 21:41:57,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 649 transitions. [2024-09-12 21:41:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-09-12 21:41:57,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:57,650 INFO L216 NwaCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:57,664 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 21:41:57,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:57,850 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:57,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash 198452091, now seen corresponding path program 81 times [2024-09-12 21:41:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916759861] [2024-09-12 21:41:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:42:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:42:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:42:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:42:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:42:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:42:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 21:42:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 21:42:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 21:42:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 21:42:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 21:42:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 21:42:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 21:42:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 21:42:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 21:42:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 21:42:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 21:42:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 21:42:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 21:42:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 21:42:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 21:42:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 21:42:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 21:42:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 21:42:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 21:42:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 21:42:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-12 21:42:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-12 21:42:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-12 21:42:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-12 21:42:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-12 21:42:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-12 21:42:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-12 21:42:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-12 21:42:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-12 21:42:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-12 21:42:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-12 21:42:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-12 21:42:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-12 21:42:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-12 21:42:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-12 21:42:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-12 21:42:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-09-12 21:42:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-09-12 21:42:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2024-09-12 21:42:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2024-09-12 21:42:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 21:42:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2024-09-12 21:42:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2024-09-12 21:42:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-09-12 21:42:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-09-12 21:42:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2024-09-12 21:42:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2024-09-12 21:42:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2024-09-12 21:42:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2024-09-12 21:42:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2024-09-12 21:42:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2024-09-12 21:42:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2024-09-12 21:42:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2024-09-12 21:42:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2024-09-12 21:42:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2024-09-12 21:42:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2024-09-12 21:42:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2024-09-12 21:42:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2024-09-12 21:42:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2024-09-12 21:42:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2024-09-12 21:42:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2024-09-12 21:42:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 9183 proven. 4893 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-09-12 21:42:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916759861] [2024-09-12 21:42:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916759861] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622554632] [2024-09-12 21:42:05,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:42:05,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:05,988 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 21:42:05,988 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 21:42:06,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2024-09-12 21:42:06,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:06,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-09-12 21:42:06,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-09-12 21:42:11,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-09-12 21:42:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622554632] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:20,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 73, 73] total 211 [2024-09-12 21:42:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233820823] [2024-09-12 21:42:20,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:20,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2024-09-12 21:42:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2024-09-12 21:42:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7389, Invalid=36921, Unknown=0, NotChecked=0, Total=44310 [2024-09-12 21:42:20,847 INFO L87 Difference]: Start difference. First operand 628 states and 649 transitions. Second operand has 211 states, 211 states have (on average 3.3507109004739335) internal successors, (707), 210 states have internal predecessors, (707), 139 states have call successors, (140), 3 states have call predecessors, (140), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) Killed by 15